Get unlimited data on Pay As You Go from £15/month. Compare unlimited data SIM cards with no contract & no credit check.
In the UK, most mobile networks now offer an unlimited data plan, allowing you to download as much as you like. However, the choice of mobile networks is a little more restrictive if you’re looking for unlimited data on a Pay As You Go SIM card.
If you’re looking for an unlimited data plan with no contracts and no credit checks, there are currently nine UK mobile networks offering unlimited data on Pay As You Go. Prices start from £15 per month for unlimited data on Pay As You Go.
In this article, we’ll compare the unlimited data plans that are available on Pay As You Go in the UK. We’ll start with an overview of available providers, before looking at individual mobile networks in more detail.
|Unlimited Data Pay As You Go:||From £15/month|
|Recommended Deal:||£15/month on SMARTY
(5G coverage from Three & no credit check)
|Alternative:||£12.50/month for 3 months on Lebara using KEN3 code
(5G coverage from Vodafone, £25/month after 3 months)
|With O2 Coverage:|
|With Three Coverage:|
|With Vodafone Coverage:|
Unlimited Data on Pay As You Go
Compare Pay As You Go Unlimited Plans
In the UK, there are currently nine mobile networks that offer an unlimited data plan on Pay As You Go.
The following table shows a side-by-side comparison of the unlimited data plans available on each Pay As You Go network:
£9.99 for 6 months
All of these plans are available on a one-month rolling basis, with no contract and no credit check required. You’ll simply pay for one month’s usage at a time and you can cancel it whenever you like.
Coverage, Speed & Limitations
When you choose an unlimited data plan on Pay As You Go, it’s important to consider the coverage you’ll get on it. You should also keep a close eye on any fair usage limits, speed restrictions and tethering limits on the plan.
The following table shows a summary of this information for each UK network:
|Mobile Network||Coverage Provider||Speed||Key Limits & Restrictions|
For further information about the unlimited data plans on each Pay As You Go network, read on to learn more about each individual provider.
Unfortunately, it isn’t currently possible to get unlimited data on a Pay As You Go SIM card with coverage from EE. For more information, see our guide to networks using EE coverage.
At present, SMARTY is our recommended provider if you’re looking for unlimited data on Pay As You Go.
If you’re looking for unlimited data without a contract or credit check, SMARTY currently offers the UK’s best value deal.
If you order your unlimited data SIM card through this special link, you’ll get unlimited data for just £15 per month. This includes 5G at no extra cost, along with unlimited UK minutes & unlimited UK texts.
There are no fair usage limits or speed restrictions on SMARTY’s unlimited data plan. You can also cancel it whenever you like.
If you’re looking for unlimited data on a shorter introductory deal, Lebara Mobile offers unlimited data for just £12.50/month for the first 3 months (it’s then £25/month after the first 3 months).
To get this exclusive 3 months half price offer, you’ll need to order your SIM card through this link, entering KEN3 as your voucher code at checkout. This offer ends on the 31st December 2023.
On Lebara Mobile’s unlimited data plan, you’ll get 4G & 5G coverage from Vodafone. You’ll also get unlimited UK minutes, 100 international minutes and unlimited UK texts included with your plan.
Pay As You Go Unlimited Data: By Mobile Network
In the following section, we’ll look at the unlimited data plans on each Pay As You Go mobile network in more detail.
On ASDA Mobile’s Pay As You Go service, there are currently three unlimited data plans you’re able to choose from. These plans start from £20/month and include 4G & 5G coverage on the Vodafone network.
The following table shows ASDA Mobile’s unlimited data plans on Pay As You Go:
You can use up to 5GB of data at no extra cost each month when you’re travelling abroad in 36 European destinations.
For more information, see our ASDA Mobile unlimited data review.
On giffgaff, you can choose from two unlimited data SIM cards, both of which give you 4G & 5G coverage from O2:
The following table shows giffgaff’s unlimited data plans, both of which are available with no contract and no credit check:
If you’re travelling abroad to another European country, a 5GB data roaming limit will apply. Beyond this, you’ll need to pay 10p/MB.
For more information, see our guide to unlimited data on giffgaff.
In the UK, Lebara Mobile currently offers an unlimited data SIM card for £12.50/month for the first 3 months (£25/month thereafter). To get this offer, you’ll need to enter KEN3 as your voucher code at the checkout.
On Lebara’s unlimited data plan, you’ll get 4G & 5G coverage from Vodafone. You’ll also get unlimited UK minutes, unlimited UK texts and 100 international minutes to 42 countries.
For an extra £5/month, you can upgrade this to a plan with unlimited international minutes.
For more information, see our guide to Lebara Mobile’s SIM-only deals.
Lycamobile is a specialist provider of international calling. They offer a Go Endless bundle which costs £25 for 30 days of usage. This gives you unlimited UK minutes, unlimited UK texts and endless UK data, with a fair usage limit of 150GB per month.
Lycamobile also offers the Go Endless Plus bundle. This costs £30 for 30 days of usage. It also includes unlimited international minutes for calling 41 countries.
On Lycamobile, the use of tethering and personal hotspot is not permitted. You’ll get access to 4G coverage from O2. You’ll also get 5G coverage if you’re using a 5G-ready Android device.
For more information, you can read our Lycamobile review.
In the UK, SMARTY Mobile is a low-cost sub-brand of Three. At present, they offer unlimited data on Pay As You Go for just £15 per month. The SIM card gives you 4G & 5G coverage from Three, along with unlimited UK minutes and unlimited UK texts.
According to SMARTY, tethering and personal hotspot usage are included in the plan and there are no speed restrictions for using too much data. You can also use an unlimited data SIM card in other devices like your tablet, dongle or mobile broadband router.
On SMARTY, a 12GB per month fair usage limit applies when you’re travelling abroad in Europe.
For more information, see our SMARTY unlimited data review.
Unfortunately, Three charges a lot more for unlimited data on Pay As You Go, compared to unlimited data on their Pay Monthly SIM cards. For instance, you can get unlimited data for just £20/month if you’re willing to sign up on a contract with Three. Alternatively, SMARTY offers unlimited data for £15 with no contract & with 5G coverage from Three.
For more information, see our guide to unlimited data on Three.
On Vodafone’s Pay As You Go service, it’s possible to get an unlimited data SIM card for £40/month. This is available with no contract and no need for a credit check. You’ll also get access to Vodafone’s 5G network on this plan.
This following table shows Vodafone’s Pay As You Go unlimited data plan:
Because of the incredibly high cost for unlimited data on Vodafone Pay As You Go, we wouldn’t normally recommend this plan for most users. Instead, consider Lebara Mobile's £25 unlimited data plan instead. This gives you unlimited data with access to Vodafone’s 4G and 5G network.
Alternatively, you can consider Vodafone’s unlimited data plans on a Pay Monthly contract (available from £30/month).
VOXI is a low-cost sub-brand of Vodafone. They currently offer unlimited 5G data for £30/month with no contract and no credit check.
VOXI’s unlimited data plan will give you access to Vodafone’s 5G network. This offers an average download speed of 150-200Mbps on 5G.
For more information about a specific unlimited data deal, please see the details on your mobile network’s website. In addition, you may find it useful to read our overview of unlimited data plans in the UK and the best Pay As You Go SIM cards.