01/02 vs 03 vs 0800: which UK business number should I choose?

A quick comparison

The prefix sets an expectation before the call is answered. Geographic 01 and 02 numbers identify an area. 03 numbers are UK-wide and are charged to callers on the same basis as calls to 01 and 02 numbers, including relevant inclusive allowances. 0800 and 0808 are free for consumers to call from UK landlines and mobiles.

The right number depends on whether you want local identity, one national contact point or a free-to-caller service.

• 01/02: local or regional identity.
• 03: UK-wide identity without a premium-rate impression.
• 0800/0808: free for the consumer to call.
• Use separate numbers when departments or campaigns need distinct routing and reporting.

Choose 01 or 02 for geographic identity

Geographic numbers can help callers recognise the region associated with the business contact. They suit local offices, regional sales teams, service areas and organisations that want a familiar town or city code.

The number can route to a modern phone system or mobile destination, but the area code should remain relevant and should not be used to make misleading claims about physical premises.

Choose 03 for one UK-wide contact point

03 numbers are not linked to a particular town. Ofcom describes them as UK-wide numbers that allow organisations to provide a national contact point without callers paying more than they would for an 01 or 02 call.

They can work well for a business with customers across the UK, a multi-site organisation, a central support desk or a service that should not appear tied to one region.

Choose 0800 when the caller should not pay

0800 and 0808 are Freephone ranges. They are free for consumers to call from UK landlines and mobiles. The organisation receiving the call normally pays the relevant inbound service charges.

Freephone can be valuable for sales lines, helplines and customer-care services, but compare the inbound rate, monthly rental, expected duration and call volume before deciding.

Questions that make the choice easier

Start with the customer journey. Consider where callers are located, whether they expect a local office, whether the service is national, and whether removing the caller's cost is commercially important.

Also check how the number will appear on websites, adverts, vehicles, directories and outbound caller ID. Consistency matters more than collecting many prefixes that are not actively managed.

• Do customers buy locally or nationally?
• Will callers recognise and trust a named area code?
• Should the caller pay nothing for the call?
• Are inbound usage charges included in the budget?
• Will one number serve the whole organisation or should teams have separate DDIs?