Get The Best SIM Only Deals

Use our filter to find the best SIM only deals around the UK. We bring together the best deals from around the internet and use AI to make sure you get the best deals you can.

Networks

  • 1p Mobile

  • Chattr

  • giffgaff

  • iD Mobile

  • Lebara

  • Lyca Mobile

  • O2

  • Smarty

  • Three

  • Voxi

All SIM Only Deals

-50%

Lyca Mobile – 30GB for £5 – PAYG

Lyca Mobile is a global mobile virtual network operator (MVNO) that

£10.00 Original price was: £10.00.£5.00Current price is: £5.00.

O2 – 30GB for £15 – PAYG

  • United Kingdom
  • O2

O2 Mobile is a UK-based telecommunications provider that offers a variety

£15.00

O2 – 50GB for £15 – PAYG

  • United Kingdom
  • O2

O2 Mobile is a UK-based telecommunications provider that offers a variety

£15.00

O2 – 150GB for £17 – PAYG

  • United Kingdom
  • O2

O2 Mobile is a UK-based telecommunications provider that offers a variety

£17.00

Asda Mobile – Unlimited Data for £22 – PAYG Offer

Asda Mobile is a mobile virtual network operator (MVNO) that is

£22.00

Asda Mobile – 100GB for £18 – PAYG Offer

Asda Mobile is a mobile virtual network operator (MVNO) that is

£18.00

Asda Mobile – 15GB for £10 – PAYG Offer

Asda Mobile is a mobile virtual network operator (MVNO) that is

£10.00

Asda Mobile – 10GB for £7 – PAYG Offer

Asda Mobile is a mobile virtual network operator (MVNO) that is

£7.00

-70%

Lebara – 50GB for £2.70 – PAYG

Lebara Mobile is a telecommunications provider that specializes in mobile services,

£9.00 Original price was: £9.00.£2.70Current price is: £2.70.

Lebara – 30GB for £2.40 – PAYG

Lebara Mobile is a telecommunications provider that specializes in mobile services,

£2.40

Chattr – 50GB for £15 – PAYM

  • United Kingdom

Chattr is a UK-based mobile service provider that offers SIM-only and

£15.00

Chattr – 25GB for £18 – PAYM

  • United Kingdom

Chattr is a UK-based mobile service provider that offers SIM-only and

£18.00

Chattr – 5GB for £14 – PAYM

  • United Kingdom

Chattr is a UK-based mobile service provider that offers SIM-only and

£14.00

Chattr – Unlimited Data for £20 – PAYM

  • United Kingdom

Chattr is a UK-based mobile service provider that offers SIM-only and

£20.00

Voxi Mobile – 100GB for £20 – PAYG

Voxi is a mobile network in the UK that operates as

£20.00

Voxi Mobile – 60GB for £10 – PAYG

Voxi is a mobile network in the UK that operates as

£10.00

Lebara – 50GB for £9 – PAYG

Lebara Mobile is a telecommunications provider that specializes in mobile services,

£9.00

giffgaff – 15GB for £10 – PAYG

Giffgaff is a mobile virtual network operator (MVNO) based in the

£10.00

-40%

giffgaff – Unlimited Data for £15 – PAYM

Giffgaff is a mobile virtual network operator (MVNO) based in the

£25.00 Original price was: £25.00.£15.00Current price is: £15.00.

giffgaff – 1GB for £6 – PAYG

Giffgaff is a mobile virtual network operator (MVNO) based in the

£6.00

giffgaff – 80GB for £20 – PAYG

  • United Kingdom

Giffgaff is a mobile virtual network operator (MVNO) based in the

£20.00

What Is A SIM Only Deal?

A SIM only deal is a mobile plan that gives you just a SIM card, without a phone. It usually includes a certain number of minutes, texts, and data for a monthly fee. This option is great if you already have a phone you like and want to save money. SIM only deals often have flexible contract lengths, like one month or a year.

Is It Easy To Swap Networks?

Switching networks to find a better deal is straightforward, but first, you need to check how much time is left on your current contract. You can do this by logging into your network’s app or website, reaching out to their customer service team, or texting INFO to 85075.

If you’re still under contract, you’ll need to wait until it ends before you can switch to a SIM-only plan, unless you’re willing to pay an early cancellation fee.

As your contract nears its end, your network is required to send you a notification regarding the contract’s conclusion.

Once your contract has ended, switching networks becomes as easy as sending a text, thanks to the new text-to-switch legislation.

Will I Lose Service If I Swap Phone Networks?

Moving to a new network is usually a smooth process, and you shouldn’t experience any significant downtime. After you provide your PAC code to your new network, you’ll still be able to make calls and receive texts.

When the switch to your new network occurs, you might lose service for a brief moment, but this typically lasts only a few minutes.

Once the transfer is complete, simply insert your new SIM card into your phone and turn it on. If your phone works and you can make calls, you’re ready.

How Does Our Site Work?

Customers must purchase the deal directly from the retailer’s website. Prices, plan names and offers all based on information received from suppliers. Deals and vouchers offered are subject to availability and may not be available to existing customers. Networks may increase monthly line rental prices in line with the retail or consumer price index each year during the length of your contract. Please refer to individual retailer’s terms and conditions before applying. We may receive a commission for this sale.