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Mobile special offers: current best deals on SIM only & phone contracts

Phone, SIM card and special offer tag

The retailers featured on this page may compensate us when our readers follow links to their websites and make a purchase. More

We list every UK mobile network's latest special offers on one page to help you get the best value out of your next mobile deal. SIM Sherpa is your trusty guide. Last updated: 3rd July 2020

Networks featured

Three logo
BT Mobile logo
EE logo
giffgaff logo
ID logo
O2 logo
Virgin Mobile logo
Vodafone logo
VOXI logo

BT Mobile



£5 free giffgaff credit with your first £10 top up

giffgaff free credit offer

Get £5 free credit

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On SIM only, giffgaff don't really tend to have big discounts or promotional plans ever. But you can get £5 of free credit when you first sign up.

Use our special order link here, top up with at least £10 (or buy a goodybag for £10 or more) and giffgaff will automatically add £5 of welcome credit to your account.

If you're after a smartphone, you can use the £5 free credit offer. See giffgaff's latest phone contract pricing here.

Useful link: Get free credit on giffgaff now

iD Mobile

iD's affordable SIM only deals

iD Mobile 1GB £5 SIM banner

See all deals

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iD Mobile are always among the cheapest mobile networks for the lower data plans. This month they've got a couple of reasonably competitive deals:

Useful link: All iD Mobile's special offers



Plusnet's current SIM only offers

Here's a look at the best offers currently available on Plusnet Mobile:

Sky Mobile


Tesco Mobile

Tesco Mobile's 2GB for £7.50 SIM deal

Tesco Mobile 2GB SIM banner

See all deals

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This month you'll find fairly average prices on SIM only plans with Tesco Mobile, who are always among the cheapest of the providers using the O2 network for coverage. This offer is one of their more competitively priced plans:

The SIM only offers this month may not be making headlines but Tesco Mobile do have some excellent prices on smartphone contracts.

If you're ready to go for a new phone, there are some decent discounts off the device cost of all the iPhone, Samsung and Huawei models listed here.

Useful link: See all Tesco Mobile offers


Hidden £18 unlimited data deal on Three

Three's hidden unlimited data deal

See full offer

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Pay just £18 a month for Three's hidden unlimited data SIM only deal:

This deal is better value than the 24‑month plan currently being advertised with six months at half price, which averages out to £19.25 a month over the course of the contract.

Or if you don't need that much data, it's worth looking at Three's hidden 8GB for £8 offer or 12GB for £10 deal.

If it's a phone contract you're after, be sure to check you can't get a better deal with our hidden phone offer page here.

Useful links: See all latest Three offers

Virgin Mobile

Hidden offers on Virgin Mobile

Virgin Mobile 25GB SIM banner

See full offer

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Order by 15th July to squeeze even more value out of your deal with these hidden offers you won't find advertised on the main part of

On phone contracts, every model in their pay monthly range has it's 100GB plan reduced by £9 a month, so works out just £1 more expensive than 8GB one. See how they all compare using our phone deal finder.

Useful link: See all Virgin's special offers on one page at



VOXI's data boosts until June

VOXI's 8GB data boost SIM

See the deal

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SIM Sherpa can help you find your next SIM only deal

network logos