Compare Three UK Pay Monthly, Home Broadband and SIM-Only plans – then claim £40 cashback (£20 on SIM-Only) when you sign up through our link. Prices current as of 2 September 2026.
We compare Three UK against the other major UK networks so you can see where Three sits on price, data and roaming. Every new-customer sign-up through our link earns you extra cashback on top – no promo code, no split with a friend, no faff.
| Feature | Three | EE | O2 | Vodafone | Lebara | Smarty |
|---|---|---|---|---|---|---|
| Entry SIM-Only price/mo | from £8 | from £15 | from £12 | from £13 | from £5 | from £6 |
| Entry data allowance | Unlimited on many plans | 5 GB | 3 GB | 4 GB | 2 GB | 4 GB |
| Minutes & texts | Unlimited | Unlimited | Unlimited | Unlimited | 1000 mins / unl. texts | Unlimited |
| Contract length | 1, 12 or 24 months | 12 or 24 months | 1, 12, 18 or 24 months | 12 or 24 months | 30 days (no contract) | 30 days (no contract) |
| Mid-contract price rise | Fixed £/month uplift | Fixed £/month uplift | Fixed £/month uplift | Fixed £/month uplift | No rises | No rises |
| EU roaming | Free “Go Roam” in EU | £2.59/day | Included on some plans | £2.42/day (some plans free) | Free (30 GB) | Free (12 GB) |
| 5G access | Included, all plans | Included | Included | Included | Included | Included |
| Network | Three (own network) and Vodafone (MOCN) | EE (own) | O2 (own) | Vodafone (own) | Vodafone (MVNO) | Three (MVNO) |
| Trustpilot rating | 4.6 / 5 | 1.4 / 5 | 1.6 / 5 | 1.5 / 5 | 4.8 / 5 | 4.1 / 5 |
| Credit check | SIM-Only 1m: none. 12/24m: yes. | Yes | Yes | Yes | None | None |
| New-customer cashback via this site | £40 (£20 SIM-Only) | — | — | — | — | — |
Figures compiled from each network’s public tariffs on 2 September 2026. Prices exclude in-contract inflation uplifts and change frequently – always confirm at three.co.uk before signing up.
from £25 / mo
Any new 24-month handset contract on Three’s Pay Monthly Phone range – iPhone, Samsung, Pixel, all eligible.
from £20 / mo
Three’s 5G or 4G Home Broadband on a rolling contract – no landline, no engineer visit, router included.
from £8 / mo
Any new Three SIM-Only Pay Monthly plan – 1-month, 12-month or 24-month. Bring your own phone.
The full £40 (or £20 on SIM-Only) paid to your PayPal or bank once your first bill clears. Nothing added to your Three bill.
Use your minutes, texts and data in 47 Go Roam destinations across Europe at no extra cost on eligible Pay Monthly plans.
Three's 5G network covers 99% of the UK population. Included on every Pay Monthly, SIM-Only and Home Broadband plan at no extra cost.
Just click the referral link and finish your order on three.co.uk. The £40 tracks automatically - no vouchers, no cashback site, no split with a friend.
Three UK holds an "Excellent" Trustpilot rating on Pay Monthly service - one of the highest scores of any UK MNO with its own network.
Paid straight to your PayPal or UK bank - no minimum threshold, no vouchers, no store credit. Withdraw the £40 as soon as it clears.
Once Three UK confirms your first bill has been paid, the reward is validated and you’ll get an email inviting you to claim.
Timeline
3 to 8 weeks from Three activation until the £40 is claimable in your rewards account.
Payout methods
Direct bank transfer (UK) or PayPal. Your choice at withdrawal.
Threshold
None. Withdraw the £40 (or £20) as soon as it clears – no minimum balance.
4.6 / 5
Trustpilot (Three UK)
99%
UK 5G population coverage
47
Go Roam destinations
3-8 wks
Cashback payout window
Pick your plan, click through and finish your order on three.co.uk.
