UK business phone numbers: 01, 02, 03, 07 and 08 explained
Choosing a UK business number? See what 01, 02, 03, 07 and 08 numbers mean, what customers think of them and which one suits your business.
On this page
UK numbers follow a clear system. The first digits tell people where the number is based and what kind it is. Choosing the right one helps customers trust your business before you say a word.
| Prefix | What it is | Best for |
|---|---|---|
| 01 and 02 | Geographic numbers, such as 020 for London | Local trust and area presence |
| 03 | Non-geographic, UK-wide, charged like a geographic call | A national business that does not want a place tied to it |
| 07 | Mobile-style numbers | Direct lines and mobile-first teams |
| 0800 and 0808 | Freephone numbers, free for callers | Support lines and wide customer reach |
Geographic numbers: 01 and 02
A number starting 020 is London, 0121 is Birmingham, 0161 is Manchester and so on. These numbers feel local and trustworthy, so many service businesses choose them even when they work remotely.
03 numbers
03 numbers are not tied to a location, work anywhere in the UK and are charged to callers like normal geographic numbers. They suit companies that want a national feel.
07 mobile numbers
Mobile-style numbers suit people who want customers to feel they are speaking directly to someone, such as a sales rep or recruiter.
0800 freephone numbers
Freephone numbers are free for callers, which can increase calls to support and sales lines.
How to choose
- Think about where your customers are and what they would expect.
- Decide whether you want a local feel or a national one.
- Check the number types your provider offers in the UK.
- Consider a second number for a different job, such as support.
Dialsyx offers UK local and mobile numbers at $30 per user per month, taxes included. See UK numbers and our guide to local and toll-free numbers.
If you also call Europe, look at the UK to Europe plan.
Which number for which business?
| Business | Good choice | Why |
|---|---|---|
| Solicitor or accountant in one city | Local 01 or 02 number | Feels established and local |
| National online shop | 03 number | No local tie, familiar to UK customers |
| Recruiter or consultant | 07 mobile-style number | Feels direct and personal |
| Customer support line | 0800 freephone | Free for callers, so more calls |
Tips for UK businesses
- Show your number clearly on your website header and contact page.
- Add your number to your Google Business Profile.
- Check how your number appears when you call a UK mobile.
- If you sell across Europe, consider whether a plan with European calling suits you.
Rules and etiquette
The UK has a Telephone Preference Service for people who do not want sales calls, and rules about recording and data protection. Check these before you run outbound campaigns, and read our guides on Do Not Call lists and recording consent.
Frequently asked questions
Can I use a London number if my team is elsewhere?
With a virtual number, yes. The number does not need to match where you sit.
What does an 03 number cost callers?
03 numbers are charged at the same rate as geographic numbers.
Is a UK number good for selling to Europe?
It can be, especially with a plan that covers European calling.
Does Dialsyx offer UK freephone numbers?
Our UK plan covers local and mobile numbers. Ask us about other types.
We build business calling for teams in the USA, Canada, the UK, Australia and Japan, with a browser phone and a built-in CRM. About Dialsyx
