BEST DEALS THIS WEEK

10 Best Cheapest Unlimited Data Sim No Contract - May 2026

19M consumers helped this year.

Last Updated: 27-05-2026

1

SMARTY Unlimited Data only SIM. 1 month plan, No contract, EU Roaming

SMARTY Unlimited Data only SIM. 1 month plan, No contract, EU Roaming

SMARTY

9.8

9.8

CHECK PRICE

Show More

MORE DEALS (1)

2

Lebara Mobile SIM Card: Unlimited Data SIM Only Plan for £12.50, Half Price for First 3 Months, No Contract, UK Calls, Texts, International Minutes, EU and India Roaming Included, Fits All Devices

Lebara Mobile SIM Card: Unlimited Data SIM Only Plan for £12.50, Half Price for First 3 Months, No Contract, UK Calls, Texts, International Minutes, EU and India Roaming Included, Fits All Devices

Lebara

9.6

9.6

CHECK PRICE

Show More

MORE DEALS (1)

3

Vodafone Unlimited 5G Data SIM - Mobile Broadband for Phones & Routers - No Contract - £25/Month Rolling Subscription

Vodafone Unlimited 5G Data SIM - Mobile Broadband for Phones & Routers - No Contract - £25/Month Rolling Subscription

Scancom

9.5

9.5

CHECK PRICE

Show More

MORE DEALS (1)

4

Giffgaff Nano/Micro/Standard SIM. Top Tariff Offers Unlimited Calls, Text, Data - Just Pay As You Go - no Contract. Multi Size, Fits All Devices. £5 Bonus Credit When You Top up £10 First Time.

Giffgaff Nano/Micro/Standard SIM. Top Tariff Offers Unlimited Calls, Text, Data - Just Pay As You Go - no Contract. Multi Size, Fits All Devices. £5 Bonus Credit When You Top up £10 First Time.

Giffgaff

9.2

9.2

CHECK PRICE

Show More

MORE DEALS (1)

5

EE Unlimited Data SIM – Uncapped 5G Speeds – No Contract – Preloaded Until 4th March 2028 – Plug & Play Broadband for Routers & Phones

EE Unlimited Data SIM – Uncapped 5G Speeds – No Contract – Preloaded Until 4th March 2028 – Plug & Play Broadband for Routers & Phones

Scancom

9.1

9.1

CHECK PRICE

Show More

MORE DEALS (1)

6

Three UK Data Sim Card Preloaded with UNLIMITED 4G/5G Data. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month)

Three UK Data Sim Card Preloaded with UNLIMITED 4G/5G Data. No Contracts, No Commitments, No Credit Checks, No Tie-ins, No Personal ID. (Valid for 1 Month)

Sims4Home

8.8

8.8

CHECK PRICE

Show More

MORE DEALS (1)

7

O2 Unlimited 5G Data SIM - Mobile Broadband for Phones & Routers - No Contract - £25/Month Rolling Subscription

O2 Unlimited 5G Data SIM - Mobile Broadband for Phones & Routers - No Contract - £25/Month Rolling Subscription

Scancom

8.6

8.6

CHECK PRICE

Show More

MORE DEALS (1)

8

EE Unlimited 5G Data SIM - Mobile Broadband for Phones & Routers - No Contract - £25/Month Rolling Subscription

EE Unlimited 5G Data SIM - Mobile Broadband for Phones & Routers - No Contract - £25/Month Rolling Subscription

Scancom

8.4

8.4

CHECK PRICE

Show More

MORE DEALS (1)

9

EE Unlimited Data SIM – Uncapped 5G Speeds – No Contract – Preloaded for 1 Month from Order – Mobile Broadband for Routers & Phones

EE Unlimited Data SIM – Uncapped 5G Speeds – No Contract – Preloaded for 1 Month from Order – Mobile Broadband for Routers & Phones

Scancom

8.2

8.2

CHECK PRICE

Show More

MORE DEALS (1)

10

Vodafone Unlimited Data SIM - Preloaded for 6 Months - No Contract - Quick Activation Within 1 Working Day - Mobile Broadband for Routers, Tablets & Phones

Vodafone Unlimited Data SIM - Preloaded for 6 Months - No Contract - Quick Activation Within 1 Working Day - Mobile Broadband for Routers, Tablets & Phones

Scancom

8.1

8.1

CHECK PRICE

Show More

MORE DEALS (1)