Top up any Three pay as you go number online and the credit goes straight onto the phone – no voucher code to type in. Choose £10 to £35, enter the number and pay.
Three runs its own 4G and 5G network and is known for generous data bundles.
Choose your option
- £10: £10.99
- £15: £15.99
- £20: £20.99
- £25: £25.99
- £35: £35.99
How direct top up works
- Choose the amount and type the Three mobile number you want to top up.
- Pay with PayPal or card.
- We add the credit straight to that number, usually within minutes, and email you when it is done.
No voucher code to enter – handy for topping up a family member, or your own UK number while you are abroad. Prefer a code? Buy Three top up vouchers instead.
Check the number carefully: credit sent to the wrong number cannot be moved.
Keeping your Three number
Three needs at least one chargeable use every 180 days – a top-up counts. Once you have the SIM you can top it up any time with our Three top up vouchers, sent by email in minutes – handy if you live abroad and want to keep your UK number.
Questions
How quickly is the Three credit added?
Usually within minutes of payment, seven days a week. We email you when it is done.
Can I top up someone else’s number?
Yes – any Three pay as you go number in the UK, from anywhere in the world.
Does it work on pay monthly?
No – direct top up is for pay as you go numbers only.
Related Three products
Other ways to add credit: a Three top-up voucher if you prefer a code you can save or forward or Three bundle activation to add a 30-day data bundle. Need a new Three number? Order a Three SIM card or an eSIM. See every network on our direct top up page, or browse all UK top ups.





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