UK SIM card 2026 — pay-as-you-go for newcomers or monthly contract with a new phone
Two ways: buy a cheap pay-as-you-go SIM at a supermarket on your first day (no UK bank account, no credit history) or sign a monthly contract with a new iPhone/Samsung after you open a bank account. This page explains both options in simple English for seasonal workers, students, Skilled Worker visa holders and asylum seekers.
Two main scenarios — choose yours:
- 🟢 Only mobile service, cheap and stable → pay-as-you-go SIM from Lebara or Giffgaff for £5–10/month. Available in any supermarket, no credit check, on your first day. Most seasonal workers and asylum seekers use this option.
- 📱 You want a new phone (iPhone, Samsung) → monthly contract "phone + service" £30–70/month. You pay for the phone in instalments over 24 months. You need a UK bank account and credit history (1–2 months after arrival). Good for students and Skilled Worker visa holders who stay 2+ years.
Extra: calls home (UZ/TJ/KG/KZ) — free through WhatsApp/Telegram. Lebara/Lyca have voice packages. If you travel often to the EU or home, see the roaming section below (Three pay-as-you-go works well).
⚠️ Without a UK phone number nothing works
You need a UK number for everything — open a bank account (Monzo/Wise), register with a GP, get a job, sign any contract. This is the first step after you arrive.
- Go to the nearest Tesco, ASDA or Sainsbury's — SIM cards are sold near the checkout or in the electronics section.
- Buy a pay-as-you-go SIM from any operator — Lebara, Giffgaff, O2, Three. It costs £5–10. They will not ask for a passport.
- Top up £5–15 right in the same shop — with cash or card.
Do not understand English at the checkout? Show the SIM package to the cashier. They will help you activate it — this is normal in the UK.
All operators only in English. But cashiers in Tesco/ASDA will help you activate — just show the package. For online activation use Google Translate in your browser (right click → "Translate page").
5 steps: how to buy a SIM on your first day
Everything takes 15–20 minutes. Nothing complicated.
- Go to Tesco, ASDA, Sainsbury's or any newsagent — SIM cards are sold in every small UK town. A newsagent is a small shop that sells everything, they are everywhere.
- Pick a pay-as-you-go SIM — look for packages that say "Pay As You Go" or "PAYG". Lebara, Giffgaff, O2, Three are good choices. It costs £5–10.
- Activate the SIM — inside the package there are instructions in English. The cashier can help you, or do it on the operator's website with Google Translate. Usually you only need an email address.
- Top up in the same shop — tell the cashier "top-up" and give them your SIM number (written on the SIM card). You can top up with cash or card. £5–15 is enough for the first week.
- Done — you have a UK number — now you can open a bank account, register with a doctor, give your number to your employer.
No Tesco nearby? Giffgaff offers a free SIM by post — order at giffgaff.com. Delivery takes 2–3 working days. But on your first day it is faster to go to any newsagent.
📱 5 steps: monthly contract with a new phone
If you want an iPhone, Samsung or Pixel — without paying £800–1200 upfront. Good for students and Skilled Worker visa holders who stay in the UK 2+ years.
- First — open a UK bank account. Open Wise, Revolut UK or Monzo (5–10 minutes in the app, you only need your passport). Without a UK bank account you cannot sign a contract — they need a Direct Debit for monthly payments.
- Wait 1–2 months after you arrive. During this time you build a small credit history (UK address, bank account, using your card). Without it the credit check will fail.
- Choose a phone + operator. Go to the websites of EE, O2, Vodafone, Three — they all have "Pay Monthly" plans with a phone. For example, iPhone 16 — usually £40–60/month × 24 months. Compare data, minutes, EU roaming. Tesco Mobile is often cheaper through its joint venture with O2.
- Apply online or in a shop. Operator shops are in every big shopping centre. In a shop it is faster — the cashier runs the credit check on the spot (5–10 minutes). Documents: passport + UK address + UK bank account.
- Get the phone on the same day. In a shop — immediately. Online — delivery in 1–2 days. The first Direct Debit payment will be taken after about 3 weeks. After that, every month automatically.
Important before you sign: a contract is a legal commitment for 24 months. If you leave the UK early you will have to pay an early termination fee, often £200–500+. If you are not sure you will stay 2+ years, it is better to use pay-as-you-go and buy a phone separately (for example, a refurbished iPhone 13 = £300–400).
Alternative: SIM-only contract without a phone — £10–20/month, commitment 12–30 days (rolling) or 12–24 months. It is better value than pay-as-you-go if you use more than 5GB of data per month or make many calls. A rolling plan does not need a UK bank account. Good for a student who already has a phone.
Who are all these operators — MNO and MVNO
In the UK there are two types of operators. MNO (Mobile Network Operator) — they own the physical network. MVNO (Mobile Virtual Network Operator) — they rent the network from an MNO. The call quality of an MVNO is the same as the MNO they use — they use the same towers.
| Operator | Type | Owner / Network | pay-as-you-go without credit check |
|---|---|---|---|
| EE | MNO | BT Group | ✓ "no contracts, no credit checks" |
| O2 | MNO | Virgin Media O2 | ✓ "no credit check" |
| Vodafone | MNO | VodafoneThree | ✓ "no contract to sign or credit check" |
| Three | MNO | VodafoneThree | ✓ pay-as-you-go without credit check |
| Giffgaff | MVNO | Virgin Media O2 (O2 network) | ✓ "no contract, no credit checks" |
| SMARTY | MVNO | VodafoneThree (99.5% coverage) | ✓ "no credit check" |
| Lebara | MVNO | Vodafone network | ✓ "no credit checks" |
| Lyca Mobile | MVNO | EE network | ✓ "no credit check" |
| iD Mobile | MVNO | Three network | ✓ "no credit checks" |
| Tesco Mobile | MVNO | Virgin Media O2 (50:50 JV) | ✓ pay-as-you-go in Tesco Extra |
* All quotes taken from official operator websites. Checked 9 May 2026.
VodafoneThree merger — what this means for youCMA approved 5 December 2024, operational close ~31 May 2025
Vodafone and Three merged into one company — VodafoneThree. The CMA (Competition and Markets Authority — the UK's antitrust regulator) approved the merger on 5 December 2024. The operational close of the deal is around 31 May 2025.
For you nothing has changed yet: both brands (Vodafone and Three) continue to work separately. SMARTY and ASDA Mobile are now also on the combined VodafoneThree network.
In the long term the merger may improve coverage in rural areas — important for seasonal workers on farms.
Which operator to choose — by your situation
Just arrived on a farm, nothing set up
Lebara or Giffgaff pay-as-you-go — buy in Tesco/ASDA. Activation in 5 minutes. No UK bank account — top up with cash.
If you plan to travel home, take Three pay-as-you-go right away.
I travel often to the EU/UZ/TJ/home
Three pay-as-you-go ⭐ — the only operator with free roaming in 160+ countries (including 114 outside the EU). Add a Data Pack — you can call and use the internet abroad without extra charges.
Vodafone and EE have paid roaming. Do not choose them if you travel often.
Student for 3+ years
First month — pay-as-you-go. After you open a UK bank account (Monzo/Wise) in 1–2 months, consider SMARTY or Tesco Mobile contract — better value for data per £.
Do not sign a long contract on your first day — learn the UK market first.
Skilled Worker, I want the best internet
Start with pay-as-you-go (any operator). After you open a UK bank account and get a UK address — EE or O2 contract with good 5G if you plan to stay long.
A contract requires a credit check — not on your first day.
Asylum seeker, no bank account
pay-as-you-go only — top up with cash in any shop. Lebara or Giffgaff — cheapest. No contract, no credit check.
No address? No problem. pay-as-you-go does not need an address.
I need calls to UZ/TJ/KG/KZ
Lebara or Lyca pay-as-you-go — they have historically had packages with minutes to CIS countries. Check the current packages on their websites. Or free — through WhatsApp/Telegram.
WhatsApp/Telegram work everywhere — you do not need minutes.
pay-as-you-go vs monthly contract — what a migrant should choose
| pay-as-you-go (PAYG) | Monthly contract | |
|---|---|---|
| Credit check | Not needed | Required (hard check) |
| UK address | Not needed | Usually needed |
| UK bank account | Not needed — top up with cash | Needed for Direct Debit |
| Commitment | None. Leave whenever you want | 12–24 months. Fee for early exit |
| Price | £5–15/month | £20–70+/month |
| Top up | Cash in shop, card, online | Only through bank (Direct Debit) |
| When you leave the UK | Just do not top up — nothing is taken | You must cancel — otherwise they keep taking money |
When to take a contract — main scenarios:
- You want a new phone on credit (iPhone, Samsung) — almost all contracts are "phone + service" for £30–70/month. Often this is the only way to get a new expensive phone without paying £800–1200 upfront. First open a UK bank account (Wise/Revolut/Monzo), wait 1–2 months to build credit history — then sign a contract.
- You are sure you will stay in the UK 2+ years — student or Skilled Worker. A SIM-only contract without a phone for £10–20/month gives more data and calls than pay-as-you-go.
Recommendation for most of our audience: pay-as-you-go. For a seasonal worker, asylum seeker or someone who just arrived — pay-as-you-go is a complete solution. A contract ties you for 12–24 months, requires a UK bank account and credit history. If you leave, they keep taking money until you cancel.
Plans in the £5–15 range — what to look for
Important: we do not publish exact prices — they change every few weeks. Below are ranges as of May 2026. Always check the current prices on the operator's website before you buy.
| Operator | pay-as-you-go range | Focus | Website |
|---|---|---|---|
| Giffgaff | from £5/month | Wide choice of "goodybag" packages | giffgaff.com |
| Lebara | from £5/month | International calls to UZ/PK/IN | lebara.co.uk |
| Lyca Mobile | from £5/month | CIS and international calls | lycamobile.co.uk |
| SMARTY | from £6/month | Lots of data for the money, no contract | smarty.co.uk |
| Three pay-as-you-go ⭐ | check on website | Free roaming 160+ countries | three.co.uk |
| 1pMobile | from £0.01/MB | Cheapest basic plan | 1pmobile.com |
* Prices change. Check the operator's website for current offers.
How to top up without a UK cardCash in shop, voucher, online — all work
Cash in a shop (easiest way)
Go to the checkout in Tesco, ASDA, Sainsbury's, Co-op, newsagent. Say: "Top-up, [operator], [phone number]". The cashier will find it in the system — pay with cash. You get a receipt. The money appears on your SIM in 1–2 minutes.
Voucher in a shop
The same shops sell top-up vouchers — small cards with a scratch code for £5, £10, £20. You scratch the code and enter it on the operator's website or in the app. Convenient — you do not need to ask anyone.
Online
On the operator's website. They accept any card — Revolut, Wise, Monzo, foreign Visa/Mastercard. If you do not have a UK card, use the cash method in a shop.
Through the operator's app
Most operators have an app for iOS/Android. After you create an account, you can top up in 2 clicks with a card or Apple/Google Pay.
Calls to UZ, TJ, KG, KZ — how to call home
Most people call home for free through WhatsApp or Telegram — this works everywhere you have internet. But if you need regular calls to a mobile or landline (for example, your relative does not have a smartphone) — there are operators with packages.
WhatsApp / Telegram — free calls homeWorks on any pay-as-you-go SIM with internet
Free calls and video calls over the internet to any phone with WhatsApp. Both sides need internet. It works over Wi-Fi (on the farm or in shared housing) — Wi-Fi data does not use your pay-as-you-go allowance.
Telegram
Same as WhatsApp — free calls and video calls. Good quality on a normal internet connection.
Imo
Popular in Uzbekistan and Tajikistan. Many people there use it. It is good because it keeps a call even on a weak signal — useful for calls from a UK farm or an area with poor coverage. Download free from App Store / Google Play.
Lebara and Lyca — packages for calls to UZ/CISIf your relative does not have a smartphone, you need minutes
Lebara historically has packages with minutes for calls to Uzbekistan and other CIS countries. Check the current packages on lebara.co.uk — they change.
Lyca Mobile positions itself as an operator for international calls — they have historically had packages for UZ/TJ/KG. Current offers: lycamobile.co.uk.
Tip: before you buy Lebara/Lyca pay-as-you-go specifically for calls to UZ, first check if calls to Uzbekistan are included in the package you want. Sometimes CIS minutes are only in more expensive packages.
EU and international roaming — who pays, who is free ⭐
After Brexit, UK operators are not required to provide free EU roaming. Most charge money. The exception is Three pay-as-you-go.
| Operator | Plan type | EU Roaming | For our audience |
|---|---|---|---|
| Three pay-as-you-go ⭐ | Pay As You Go | FREE in 160+ destinations (114 outside the EU) | Ideal choice if you travel home or to the EU |
| Vodafone Pay Monthly | Contract | Paid: £2.74/day, fair-use 25GB | Expensive for frequent travel |
| Vodafone pay-as-you-go | Pay As You Go | Paid: £13.50 for 10GB/15 days (separate bundle) | Extra payment before you travel |
| EE | All plans | Paid (charge per day) | Do not choose if you travel abroad often |
| O2 Pay Monthly | Contract | Depends on plan — some include EU | Check your specific plan |
| Giffgaff pay-as-you-go | Pay As You Go | EU usually works at home rate | Check before you travel |
| SMARTY | Pay Monthly | EU roaming included (depends on plan) | Check your specific plan |
| Tesco Mobile | Pay Monthly | Free EU roaming on many plans | Check your specific plan |
* Source: MoneySavingExpert.com, checked May 2026. Confirm specific conditions on the operator's website.
If you are a seasonal worker and travel home once a year — Three pay-as-you-go ⭐ is your choice. Vodafone and EE EU/international roaming is paid — both on contract and pay-as-you-go. Do not choose them as your main operator if you travel often.
Three pay-as-you-go free roaming — how it works160+ destinations, including countries outside the EU
Three pay-as-you-go lets you use your Data Pack in 160+ countries worldwide — including 114 countries outside the EU. Three calls this "Go Roam".
How it works: get a Three pay-as-you-go SIM (free at three.co.uk or buy in a shop). Buy a Data Pack through the app or Three website. Go abroad — data works automatically with no extra charges.
For our readers this is important: most CIS countries and Europe are on the list. Check the specific list of countries on three.co.uk — the list is updated.
Source: MoneySavingExpert.com (May 2026).
Pre-arrival eSIM — for your first days in the UKAiralo, Holafly — they work, but are more expensive than a local SIM
If you are flying to the UK and want internet immediately at the airport, you can buy a UK eSIM in advance through Airalo or Holafly. Activate it before your flight, internet appears when you land.
But: they are more expensive than a normal UK pay-as-you-go SIM. Use them for the first 1–2 days. As soon as you go into Tesco, buy a local pay-as-you-go SIM — it is cheaper in the long term.
eSIM — who needs it
eSIM (embedded SIM) is a digital SIM card. There is no physical card — everything works through an app or QR code.
| Question | Answer |
|---|---|
| Which phones support it? | iPhone XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer |
| Which UK operators offer eSIM? | EE, O2, Vodafone, Three — all 4 MNOs. pay-as-you-go eSIM is appearing gradually, check on the operator's website |
| Advantage of eSIM | You can have two SIMs at the same time (UK + home). You do not need to change the physical card when you switch operators |
| Does a migrant need eSIM on the first day? | No. A physical pay-as-you-go SIM is simpler and more available. eSIM is useful if you have a dual-SIM phone and want to keep your home SIM |
Dual SIM (two numbers in one phone): if you have an iPhone 14 or newer, you can keep a UK pay-as-you-go SIM (eSIM) and your home SIM (physical) at the same time. Convenient — WhatsApp on your UK number, calls home through your home SIM.
Pitfalls, scams and auto-renewals
Scams and fake "free SIM" websitesDo not enter personal details on shady sites
"Free SIM by post" — fake websites
There are websites that imitate Giffgaff/O2/Three and offer a "free SIM" — but they ask for a lot of personal details or your card details. Official UK operators send a free SIM by post without asking for card details.
Only use official websites: giffgaff.com, three.co.uk, o2.co.uk, vodafone.co.uk. Look at the address in your browser — only the original domain.
Markets and unknown sellers
Do not buy a SIM from strangers at a market or through social media. A SIM bought "second hand" may already have been used for fraud and will cause you problems.
Phishing SMS from "your operator"
A real operator will never ask you to enter your PIN or card details through an SMS. Any such message is a scam. Call the operator's support directly.
Auto-renewal of pay-as-you-go bundles — charges without warningSome operators automatically renew at the end of the period
Some pay-as-you-go bundles automatically renew at the end of the month if you have enough credit on your account. This is not always bad — it is convenient. But if you leave the UK, you can lose money on a bundle you do not need.
How to manage it:
- Check the settings in the operator's app — there is usually a switch for "Auto-renew"
- Before you leave the UK, turn off auto-renewal or leave £0 on your account
- Giffgaff and SMARTY have auto-renewal turned on by default — you can turn it off
Contract trap — do not sign on your first day24 months = fee for early exit
In O2, Vodafone, EE, Three shops they may offer you a 12 or 24 month contract. A contract sounds good ("more GB for the same money").
But:
- A contract requires a credit check — if you do not have enough UK credit history, they will refuse
- If you leave the UK early, you pay an early termination fee (the remaining payments)
- A contract requires a UK bank account for Direct Debit
- If you miss a payment, it creates a bad record on your credit history for 6 years
Your first 1–2 months in the UK — only pay-as-you-go. Consider a contract later if you are sure you will stay long.
What to do when you leave the UK
- pay-as-you-go — do nothing if you want to keep your number — just do not top up. Most operators keep your number for 6–12 months without activity. Top up before your next visit — the number will be restored.
- Turn off auto-renewal — go into the operator's app and turn off "Auto-renew" for bundles. Otherwise they will keep charging if you have credit.
- Contract — you must cancel or transfer it — a contract keeps charging even after you leave. Call the operator and ask about the early exit conditions.
- Transfer any remaining credit — if you want, some operators let you transfer your balance. Or use it before you leave — call Tesco, UK numbers, data.
- Save your login details — email/password for your operator account. You will need them to manage your SIM on your next visit.
If your UK number is linked to your bank (Monzo/Wise) or WhatsApp — do not let the SIM expire. Otherwise you will lose access to those services. A small top-up every few months keeps the number active.
Useful guides on svoi.uk
Questions and answers
Do I need a passport to buy a SIM card in the UK?
No. For a pay-as-you-go SIM in the UK you do not need a passport. Just buy it in Tesco/ASDA or order online — you only need an email address to register.
Do I need a UK address or UK bank account for a pay-as-you-go SIM?
No. A pay-as-you-go SIM does not need a UK address, UK bank account or credit history. You can top up with cash in a shop. All 8 operators (O2, Vodafone, EE, SMARTY, iD Mobile, Lyca, Lebara, Giffgaff) confirmed no credit check.
Where can I buy a SIM card on my first day in the UK?
In any Tesco, ASDA, Sainsbury's, Co-op or newsagent (a small shop — they are everywhere). It costs £5–10. You can top up with cash right there.
Which operator is best if I travel home often (EU/UZ/TJ)?
Three pay-as-you-go ⭐ — the only operator with free roaming in 160+ countries (including 114 outside the EU). Vodafone and EE roaming is paid — both on contract and pay-as-you-go.
How much does Three pay-as-you-go cost?
Exact prices change quickly — check on three.co.uk. In general, pay-as-you-go packages range from £5–15/month. The SIM itself is free (get it at three.co.uk or buy in a shop).
Is Vodafone EU roaming free?
No. Vodafone EU roaming is paid: on contract £2.74/day (25GB fair-use), on pay-as-you-go £13.50 for 10GB/15 days. If you need free roaming, choose Three pay-as-you-go.
Is EE EU roaming free?
No. EE charges for roaming on all plans. If you travel often, do not choose EE as your main operator.
How can I call Uzbekistan/Tajikistan/Kyrgyzstan for free?
Through WhatsApp or Telegram — calls are free if both sides have internet. Imo is also popular in UZ/TJ. If you need regular calls (your relative does not have a smartphone) — Lebara and Lyca have packages with CIS minutes.
What is pay-as-you-go and how is it different from a contract?
pay-as-you-go (PAYG) is a prepaid SIM with no contract. You top up and use it. If you do not like it, you just stop topping up. A contract is an agreement for 12–24 months with a monthly Direct Debit. It needs a UK bank account and credit check. There is a fee for early exit.
Can I top up a pay-as-you-go SIM without a UK card?
Yes. Top up with cash in Tesco, ASDA, Co-op or a newsagent — tell the cashier "top-up" and give them the operator and phone number. Or buy a top-up voucher (a card with a scratch code) — available in the same shops for £5/£10/£20.
What happens to my UK number when I leave the UK?
On pay-as-you-go, most operators keep your number for 6–12 months without activity. Just do not top up. Before your next visit, top up — the number will be restored. For a contract you must cancel it, otherwise they keep charging.
What is an eSIM and do I need one?
An eSIM is a digital SIM without a physical card. You need an iPhone XS+, Samsung S20+. It is useful for dual-SIM (UK + home). For your first day in the UK, a normal physical pay-as-you-go SIM is simpler. Consider eSIM if you want two numbers at the same time.
I heard Vodafone and Three merged — is that true?
Yes. The CMA approved the merger on 5 December 2024. The operational close is around 31 May 2025. Both brands still work separately. SMARTY and ASDA Mobile are now on the combined VodafoneThree network.
Which network does Lyca Mobile use?
According to data from May 2026 (DeepSeek+Gemini convergence) — Lyca has moved to the EE network. It was previously on Vodafone. We recommend you check on lycamobile.co.uk if this is important for your choice.
Can I transfer my number from one operator to another?
Yes. Send an SMS with the text PAC to 65075 — you will receive a PAC code by SMS. Give it to your new operator when you activate the new SIM. The number will transfer in 1 working day. It is free, by law.