Format
Possible number formats are as follows:
| NSN | 10 | 9 | 7 |
|---|---|---|---|
| Formats | (01xxxx) xxxxx (01xxx) xxxxxx (01x1) xxx xxxx (011x) xxx xxxx (02x) xxxx xxxx 03xx xxx xxxx 055 xxxx xxxx 056 xxxx xxxx 070 xxxx xxxx 07624 xxxxxx 076 xxxx xxxx 07xxx xxxxxx 0800 xxx xxxx 08xx xxx xxxx 09xx xxx xxxx |
(016977) xxxx (01xxx) xxxxx 0500 xxxxxx 0800 xxxxxx |
0800 1111 0845 46 4x |
Number ranges starting 01 can have NSN as 10 or 9. The 0800 range can have NSN as 10, 9 or 7. The 0845 range can have NSN as 10 or 7. The 0500 range has NSN as 9 only.
Read more about this topic: Telephone Numbers In The United Kingdom