Buy a 0333 number

From most mobiles and landlines, yes: calls to 0333 numbers come out of the caller's inclusive minutes, the same as calling an 01 or 02 number. Where they are not included, they cost the same as a local call. Our guide on whether it is free to call 0333 numbers has the full breakdown.

Nothing for your callers: both cost the same as a local call and come out of inclusive minutes. 0345 was created as the low-cost version of 0845, so it suits businesses moving off an old 0845 number. 0333 is the newer, more widely used prefix.

Straight away. Choose your number, pick a plan and pay online, and the number is live and ringing on your phone as soon as the payment goes through.

Plenty of organisations choose 03 numbers, from large corporates and local authorities to small startups that want to look nationwide. The number rings on whatever device you set, mobile, landline, desk phone or app.

03 numbers were introduced by Ofcom in 2007 as an alternative to chargeable 08 numbers. They let organisations have a single national point of contact without consumers paying extra. Calls cost no more than a national-rate call to an 01 or 02 number and count toward any inclusive minutes the same way.

0300 numbers are easy to recognise and cheap to call. Calls cost the same as a call to a standard 01 or 02 number, and most landline and mobile providers include them in their inclusive bundles.

No more than a national-rate call to an 01 / 02 number, and counted toward inclusive minutes the same way. This applies from every kind of line. You can buy an 03 number from Smart Numbers from £6.99 a month.

No. 0330 numbers are a low-cost / often-free alternative to premium prefixes. Calling them costs the same as calling any other landline. Many fixed-line and mobile networks include 0330 in their bundles.

0345 is a non-geographic prefix often used by companies that offer a UK-wide service. It's included free in most monthly landline and mobile tariffs (not guaranteed, check yours). If you're moving from a legacy 0845 number, 0345 is the easy modern equivalent.

Most monthly mobile tariffs include 0345 calls. If yours doesn't, the call costs no more than a national-rate call to an 01 / 02 number and counts toward inclusive minutes the same way.

0345 signals you trade nationwide, with no geographic association, which suits a customer base spread across the UK. Unlike an 0800 number, the caller pays for the call, so it costs you less to run.