The UK Public Switched Telephone Network is divided up by area into National Number Groups (NNG's), and then further divided up into dialling codes.
The structure of UK telephone numbers is a leading zero (replaced with +44 for international calls from outside the UK) followed by the NNG — a 2, 3, 4 or 5 digit dialling code (digits SA in the example below) to different geographic areas of the UK.
e.g.
- Telephone number (020) 7811 8055 is part of the "London Area" and so has NNG 2078:
| 0 | S | A | B | C | D | E | F | G | H | I |
|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 2 | 0 | 7 | 8 | 1 | 1 | 8 | 0 | 5 | 5 |
Famous quotes containing the words national, number and/or group:
“It is not unkind to say, from the standpoint of scenery alone, that if many, and indeed most, of our American national parks were to be set down on the continent of Europe thousands of Americans would journey all the way across the ocean in order to see their beauties.”
—Franklin D. Roosevelt (1882–1945)
“That country is the richest which nourishes the greatest number of noble and happy human beings.”
—John Ruskin (1819–1900)
“With a group of bankers I always had the feeling that success was measured by the extent one gave nothing away.”
—Francis Aungier, Pakenham, 7th Earl Longford (b. 1905)