United Kingdom country & area codes
| Area | Code | Digits |
| Fareham | (0)1489 | + 5/6D SN |
| Faringdon | (0)1367 | + 5/6D SN |
| Fionnphort | (0)1681 | + 5/6D SN |
| Fishguard | (0)1348 | + 5/6D SN |
| Folkestone | (0)1303 | + 5/6D SN |
| Fordoun | (0)1561 | + 5/6D SN |
| Forfar | (0)1307 | + 5/6D SN |
| Forres | (0)1309 | + 5/6D SN |
| Fort Augustus | (0)1320 | + 5/6D SN |
| Fort William | (0)1397 | + 5/6D SN |
| Fortrose | (0)1381 | + 5/6D SN |
| Fraserburgh | (0)1346 | + 5/6D SN |
| Frodsham | (0)1928 | + 5/6D SN |
| Frome | (0)1373 | + 5/6D SN |
| Gainsborough | (0)1427 | + 5/6D SN |
| Gairloch | (0)1445 | + 5/6D SN |
| Galashiels | (0)1896 | + 5/6D SN |
| Garstang | (0)1995 | + 5/6D SN |
| Girvan | (0)1465 | + 5/6D SN |
| Glasgow | (0)141 | + 6/7D SN |
| Glastonbury | (0)1458 | + 5/6D SN |
| Glenborrodale | (0)1972 | + 5/6D SN |
| Glenurquhart | (0)1456 | + 5/6D SN |
| Glossop | (0)1457 | + 5/6D SN |
| Gloucester | (0)1452 | + 5/6D SN |
| Golspie | (0)1408 | + 5/6D SN |
| Goole | (0)1405 | + 5/6D SN |
| Gosforth | (0)19467 | + 4/5D SN |
| Grange over Sands | (0)15395 | + 4/5D SN |
| Grantham | (0)1476 | + 5/6D SN |
| Grantown-on-Spey | (0)1479 | + 5/6D SN |
| Gravesend | (0)1474 | + 5/6D SN |
| Great Bernera | (0)1851 | + 5/6D SN |
| Great Dunmow | (0)1371 | + 5/6D SN |
| Great Shefford | (0)1488 | + 5/6D SN |
| Great Yarmouth | (0)1493 | + 5/6D SN |
| Greenock | (0)1475 | + 5/6D SN |
| Grimsby | (0)1472 | + 5/6D SN |
| Guildford | (0)1483 | + 5/6D SN |
| Guisborough | (0)1287 | + 5/6D SN |
| Guiseley | (0)1943 | + 5/6D SN |
| Halifax | (0)1422 | + 5/6D SN |
| Hanley Swan | (0)1684 | + 5/6D SN |
| Harris | (0)1859 | + 5/6D SN |
| Harthill | (0)1501 | + 5/6D SN |
| Hartlepool | (0)1429 | + 5/6D SN |
| Haslemere | (0)1428 | + 5/6D SN |
| Hastings | (0)1424 | + 5/6D SN |
| Hathersage | (0)1433 | + 5/6D SN |
| Haverhill | (0)1440 | + 5/6D SN |
| Hawick | (0)1450 | + 5/6D SN |
| Hawkshead | (0)15394 | + 4/5D SN |
| Hay-on-Wye | (0)1497 | + 5/6D SN |
| Haywards Heath | (0)1444 | + 5/6D SN |
| Heathfield | (0)1435 | + 5/6D SN |
| Helensburgh | (0)1436 | + 5/6D SN |
| Helmsdale | (0)1431 | + 5/6D SN |
| Helmsley | (0)1439 | + 5/6D SN |
| Hereford | (0)1432 | + 5/6D SN |
| High Wycombe | (0)1494 | + 5/6D SN |
| Hinckley | (0)1455 | + 5/6D SN |
| Hitchin | (0)1462 | + 5/6D SN |
| Hoddesdon | (0)1992 | + 5/6D SN |
| Holbeach | (0)1406 | + 5/6D SN |
| Holsworthy | (0)1409 | + 5/6D SN |
| Holyhead | (0)1407 | + 5/6D SN |
| Honington | (0)1400 | + 5/6D SN |
| Honiton | (0)1404 | + 5/6D SN |
| Hornby | (0)15242 | + 4/5D SN |
| Hornsea | (0)1964 | + 5/6D SN |
| Horsham | (0)1403 | + 5/6D SN |
| Huddersfield | (0)1484 | + 5/6D SN |
| Hull | (0)1482 | + 5/6D SN |
| Huntingdon | (0)1480 | + 5/6D SN |
| Huntly | (0)1466 | + 5/6D SN |
| Insch | (0)1464 | + 5/6D SN |
| Inveraray | (0)1499 | + 5/6D SN |
| Inverness | (0)1463 | + 5/6D SN |
| Inverurie | (0)1467 | + 5/6D SN |
| Ipswich | (0)1473 | + 5/6D SN |
| Iver | (0)1753 | + 5/6D SN |
| Iver | (0)1784 | + 5/6D SN |
| Iver | (0)1895 | + 5/6D SN |
| Johnstone | (0)1505 | + 5/6D SN |
| Keighley | (0)1535 | + 5/6D SN |
| Keith | (0)1542 | + 5/6D SN |
| Kelso | (0)1573 | + 5/6D SN |
| Kendal | (0)1539 | + 5/6D SN |
| Keswick | (0)17687 | + 4/5D SN |
| Kettering | (0)1536 | + 5/6D SN |
| Kettering | (0)1538 | + 5/6D SN |
| Kilchrenan | (0)1866 | + 5/6D SN |
| Killearn | (0)1360 | + 5/6D SN |
| Killin | (0)1567 | + 5/6D SN |
| Killingholme | (0)1469 | + 5/6D SN |
| Kilmarnock | (0)1563 | + 5/6D SN |
| Kilmelford | (0)1852 | + 5/6D SN |
| Kings Lynn | (0)1553 | + 5/6D SN |
| Kingsbridge | (0)1548 | + 5/6D SN |
| Kington | (0)1544 | + 5/6D SN |