01 and 02 geographic numbers signal a town or city. 03 gives a UK-wide identity and is generally included in mobile and landline bundles. 0800 and 0808 remove the cost of calling for UK callers, while 084 and 087 use a service-charge model and are not generally included in bundles.
Use geographic for local presence, 03 for fair-cost national contact, freephone when free calling is central to the service, and 084/087 only when the caller charge is clear and appropriate. 070 personal numbers are a separate follow-me range.
Browse all numbers, see plans and pricing, or read the Ofcom rules guide.