select entry in Code column to view full DE allocations in that range
| Code | DEF | Operator | Use | Notes |
| 1400 | Honington | |||
| 1401, 1402 | Geographic - unassigned | |||
| 1403 | Horsham | |||
| 1404 | Honiton | |||
| 1405 | Goole | |||
| 1406 | Holbeach | |||
| 1407 | Holyhead | |||
| 1408 | Golspie | |||
| 1409 | Holsworthy | |||
| 1410, 1411 | Glasgow National dialling | 3 Digit Code Area | ||
| 1412, 1413, 1414, 1415, 1416, 1417, 1418, 1419 | Glasgow | 3 Digit Code Area | ||
| 1420 | Alton | |||
| 1421 | Geographic - unassigned | |||
| 1422 | Halifax | |||
| 1423 | 0&1 | Harrogate/Boroughbridge National Dialling | ELNS | |
| 1423 | 2 | Harrogate | ELNS | |
| 1423 | 3&4 | Boroughbridge | ELNS | |
| 1423 | 5-8 | Harrogate | ELNS | |
| 1423 | 9 | Boroughbridge | ELNS | |
| 1424 | Hastings | |||
| 1425 | Ringwood | |||
| 1426 | Geographic - unassigned (former Paging Services) | |||
| 1427 | Gainsborough | |||
| 1428 | Haslemere | |||
| 1429 | Hartlepool | |||
| 1430 | 0&1 | North Cave/Market Weighton National Dialling | ELNS | |
| 1430 | 2-5 | North Cave | ELNS | |
| 1430 | 6-9 | Market Weighton | ELNS | |
| 1431 | Helmsdale | |||
| 1432 | Hereford | |||
| 1433 | Hathersage | |||
| 1434 | 0&1 | Bellingham/Haltwhistle/Hexham National Dialling | ELNS | |
| 1434 | 2 | Bellingham | ELNS | |
| 1434 | 3 | Haltwhistle | ELNS | |
| 1434 | 4 | Bellingham | ELNS | |
| 1434 | 5 | Haltwhistle | ELNS | |
| 1434 | 6-8 | Hexham | ELNS | |
| 1434 | 9 | Bellingham | ELNS | |
| 1435 | Heathfield | |||
| 1436 | Helensburgh | |||
| 1437 | 0&1 | Haverfordwest/Clynderwen National Dialling | ELNS | |
| 1437 | 2-5 | Clynderwen | ELNS | |
| 1437 | 6-9 | Haverfordwest | ELNS | |
| 1438 | Stevenage | |||
| 1439 | Helmsley | |||
| 1440 | Haverhill | |||
| 1441 | Geographic - unassigned | |||
| 1442 | Hemel Hempstead | |||
| 1443 | Pontypridd | |||
| 1444 | Haywards Heath | |||
| 1445 | Gairloch | |||
| 1446 | Barry | |||
| 1447, 1448 | Geographic - unassigned | |||
| 1449 | Stowmarket | |||
| 1450 | Hawick | |||
| 1451 | Stow-on-the-Wold | |||
| 1452 | Gloucester | |||
| 1453 | Dursley | |||
| 1454 | Chipping Sodbury | |||
| 1455 | Hinckley | |||
| 1456 | Glenurquhart | |||
| 1457 | Glossop | |||
| 1458 | Glastonbury | |||
| 1459 | Geographic - unassigned (former Paging Services) | |||
| 1460 | Chard | |||
| 1461 | Gretna | |||
| 1462 | Hitchin | |||
| 1463 | Inverness | |||
| 1464 | Insch | |||
| 1465 | Girvan | |||
| 1466 | Huntly | |||
| 1467 | Inverurie | |||
| 1468 | Geographic - unassigned | |||
| 1469 | Killingholme | |||
| 1470 | Isle of Skye - Edinbane | |||
| 1471 | Isle of Skye - Broadford | |||
| 1472 | Grimsby | |||
| 1473 | Ipswich | |||
| 1474 | Gravesend | |||
| 1475 | Greenock | |||
| 1476 | Grantham | |||
| 1477 | Holmes Chapel | |||
| 1478 | Isle of Skye - Portree | |||
| 1479 | Grantown-on-Spey | |||
| 1480 | Huntingdon | |||
| 1481 | Guernsey | |||
| 1482 | Hull | |||
| 1483 | Guildford | |||
| 1484 | Huddersfield | |||
| 1485 | Hunstanton | |||
| 1486 | Geographic - unassigned | |||
| 1487 | Warboys | |||
| 1488 | Hungerford | |||
| 1489 | Bishops Waltham | |||
| 1490 | Corwen | |||
| 1491 | Henley on Thames | |||
| 1492 | Colwyn Bay | |||
| 1493 | Great Yarmouth | |||
| 1494 | High Wycombe | |||
| 1495 | Pontypool | |||
| 1496 | Port Ellen | |||
| 1497 | Hay-on-Wye | |||
| 1498 | Geographic - unassigned | |||
| 1499 | Inveraray |