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The cheapest SIM-only deals from Sky, Three, Tesco Mobile and more

People across the UK are looking for ways to cut spending, from energy and fashion to food and technology, as the cost of living crisis continues to affect many households.

If you’re looking for ways to save money in the uncertainty surrounding price increases, you’ve come to the right place. We’ve compiled a list of all the cheapest SIM deals you can get below as we head into summer.

The cheapest SIM only plan we found was £4.50 with Lebara, while the most expensive is with Moving Sky, depending on the plan you select. Scroll down for the full list of cheap SIM deals and to find out more.

Moving Sky

Those on a budget and needing a smaller amount of data may be intrigued by Sky Mobile’s cheapest plan. For £6 a month you can get 2GB of data and unlimited texting and calling, plus any spare data carried over for up to three years.

Sky has 99% network coverage in the UK, meaning it’s a safe bet wherever you are in the country. If you’re looking to get more data per month, Sky offers 50GB for £25 per monthwhich includes the same benefits as the cheapest package.

Not sure how much data you need? Don’t worry, you can switch plans whenever you want via the My Sky app.


Tesco has a range of SIM-only contracts and prices range from £7.50 to £30. The cheapest plan includes 2 GB of data, EU roaming and unlimited calls and texts.

Those with a Tesco Clubcard can also purchase the Unlimited plan at the discounted price of £17.50, down from the usual £30. The unlimited SIM card offers EU roaming, unlimited texting and calling, and unlimited data, meaning you’ll never have to go without an internet connection. This deal works on 4G and 5G networks.


Smarty’s motto is “mobile simple and honest” and their SIM offers seem easy to understand and cheaper. The SIM company’s cheapest deal is capped at £6 a month and includes unlimited texting and calling and 4GB of data. However, it only costs £1 more to double your included data to 8GB (£7 total per month).

All Smarty plans include: 1 month plan, cancel anytime, unlimited calls and texts, fast 5G, 4G and 3G data, no credit checks, unlimited connection in the UK, no speed limit, international roaming. EU, and they offer SIM, Micro-SIM, and Nano-SIM sizes.

Smarty’s most expensive option costs £20 and offers both unlimited data and unlimited calls and texts.


Three’s cheapest plan is £6 a month

Three offers 18 SIM only plans, ranging from 1GB to unlimited and prices range between £6 per month and £28 per month. The cheapest deal offered by Three is a 24-month contract and costs £6 per month. The SIM card includes 1GB, unlimited texting and calling, personal hotspots, the ability to unlock free roaming privileges for 24 hours.

However, for those who want a cheaper SIM card but need more data, Three currently offers their 12 GB plan for £6 per month for the first six months, then £12 per month thereafter. Three’s unlimited data plan sells for £28 per month and is 5G-ready at no extra cost.


SIM-only plans – or goodybags as GiffGaff calls them – allow you to benefit from flexibility and savings. All GiffGaff goodybags come with unlimited UK calls and texts and are 4G and 5G ready. the cheapest package available on the network is £6 per month, comes with 1GB of data and is contract-free. The next cheapest plan offers 3GB of data for £8, while the most expensive plan (called Always On) gets you unlimited data for £25 a month.

Until December 31, 2022, GiffGaff promise fixed prices in the UK. This applies to Pay as You Go fares, goodybags and all UK fares, but excludes international fares and roaming.


Lebara offers 30-day and 12-month contracts to suit your needs. The SIM card provider is currently offering 10% off, meaning you can get their cheapest plan for £4.50 a month for 12 months, or £5 on the 30-day contract. This includes 3GB of data, 1000 UK minutes and SMS, 100 international minutes to 42 countries and is 5G ready.

For those who need unlimited data, you can get it through Lebara for £22.50 per month for 12 months, or £30 on the 30-day contract. This unlimited plan includes unlimited UK minutes and texts and unlimited international minutes to 42 countries.

Cashback offers to help you save money

Online retailer published a list of the best-selling SIM offers, with incredible cashback savings and super-fast 5G connection speeds.

The latest promotions include huge data allowances, with deals starting at just £6.00 per month. JThe following offers are live on site at the moment:


Save money on your Vodafone SIM card by buying it through The site currently offers 20GB of data for £8.00 per month, or 30GB of data for £10.00 per month – both of which are 12 month contracts.

If you’re looking for more data each month, Vodafone offers a SIM only offer which allows customers to get 100 GB of data for £9.50 per month (after cashback) during a 12 month contract. Shoppers can save £66 in cashback. To take full advantage of this offer, go to, here, to learn more and buy.

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With you can buy 4GB of data for £6.00 per month on a one-month rolling contract, plus you’ll rollover unused data to the next month for free, meaning nothing goes to waste.

By spending just £1.50 more per month you can get 50GB of data for £7.50 per month (after cashback) on a 12-month plan, or if your data needs are greater, iD Mobile offers unlimited data for £11.50 per month (after cashback) when you buy through

With an iD Mobile SIM card, you can expect reliable coverage in the UK, as well as free roaming in many European destinations. Get your SIM card now by going to website.