Question 1

What are 03 numbers?

Accepted Answer

03 numbers are UK-wide telephone numbers introduced by Ofcom as a fairer alternative to 08x numbers. They are regulated to be charged at the same rate as geographic (01/02) calls and are not tied to a specific area of the UK.

Question 2

Are 03 numbers included in mobile bundle minutes?

Accepted Answer

Yes. Calls to 03 numbers are included in virtually all UK mobile and landline inclusive minute bundles — exactly the same as calls to 01 and 02 numbers. Most callers pay nothing extra to call a 03 number.

Question 3

What is the difference between 03 numbers and 0800 numbers?

Accepted Answer

0800 numbers are completely free to callers — the business receiving the call pays the cost. 03 numbers are charged at the standard geographic rate, which is usually included in mobile bundle minutes. The key advantage of 03 numbers is that they cost less for the business to operate than 0800 numbers.

Question 4

Can charities use 03 numbers?

Accepted Answer

Yes. 03 numbers are widely used and recommended for charities and non-profit organisations. Ofcom guidance encourages charities to use 03 numbers so that supporters, donors, and service users are not deterred by high call costs. Housing associations and NHS trusts also commonly use 03 numbers.

Question 5

What is the difference between 030 and 033 numbers?

Accepted Answer

Both 030 and 033 are within the 03 range and are charged at the same rate. 030 numbers are most commonly used by public-sector bodies, charities, and non-commercial organisations, while 033 numbers are used more broadly by commercial businesses and national organisations.

03 Numbers — UK-Wide Virtual Phone Numbers