Alltone TelecomsBusiness phones and numbers

Numbers guide

0800 vs 0333 vs local numbers: which should your business use?

The number you advertise affects who calls you and what they pay. This guide compares the main UK number types so you can choose the right one, or the right mix.

By the Alltone Telecoms team. Updated 24 October 2026. About 2 minutes to read.

The quick comparison

Number typeWhat callers payBest for
0800 / 0808Free from landlines and mobilesSales lines, helplines, national advertising
0330 / 0333Same as a local call, included in most bundlesNational businesses that do not want freephone costs
0300Same as a local call, eligible organisations onlyCharities and public sector
01 / 02 localStandard local rateLocal services, multi-town presence
0845 / 0870Access charge plus a service chargeGenerally best avoided for new numbers

When to choose 0800

Choose freephone when cost could stop someone calling: sales enquiries, customer service, support lines and advertising. Since July 2015 calls to 080 numbers have been free from mobiles, so the old objection that 0800 numbers cost mobile callers money no longer applies.

When to choose 0333

03 numbers are a fair middle ground. Callers pay the same as a local call, usually nothing extra because of inclusive minutes, and you avoid paying for every inbound minute.

When to choose a local number

People trust their own area code. If most customers are local, or you want to look local in several towns, geographic numbers work well. With virtual numbers they can ring any phone.

Use more than one

Many businesses run a national 0333 or 0800 number alongside local numbers for each branch, plus campaign numbers for call tracking. All of them can route into the same phone system.

Common questions

Something else on your mind? Call 020 7112 8558 or send us a message and a telecoms specialist will reply.

Do 0845 and 0870 numbers still exist?

Yes, but calls carry a service charge set by the number owner, and callers often see them as expensive. Most businesses move to 0345 or 0370, which keep the last digits but are charged like 03 numbers.

Talk to a telecoms specialist

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