After the First World War, any units involved in coastal defence, and the few remaining units of the Royal Garrison Artillery, were designated Heavy Regiments.
Heavy Regiments (Field Force)
The majority of Heavy Regiments were formed after the outbreak of the Second World War.
Heavy Regiments converted to Coast Regiments
In late 1940, only the Field Force regiments remained as Heavy, while the rest became Coast Regiments.
Named Heavy Regiments
Some Heavy regiments employed in coastal defence were named rather than numbered. From mid 1940 to early 1941 they were converted to Coast Regiments.
| Name | Formed | Became | Date |
| Antrim | Mar 40 | 525 (Antrim) Coast Regiment | Jul 40 |
| Clyde | 1924 | 538 (Clyde) Coast Regiment | Jan 41 |
| Cornwall | Jan 40 | 523 (Cornwall) Coast Regiment | Jul 40 |
| Devonshire | 1924 | 566, 567, 568 (Devon) Coast Regiments |
Apr 41 |
| Dorsetshire | 1924 | 522 (Dorsetshire) Coast Regiment | Jul 40 |
| Durham | 1924 | 511, 526 (Durham) Coast Regiments | Jul 40 |
| East Riding | 1924 | 512, 513 (East Riding) Coast Regiments | Jul 40 |
| Fife | 1939 | 504, 507 (Fife) Coast Regiments | Jul 40 |
| Forth | 1924 | 501, 502, 503, 505, 506 (Forth) Coast Regiments | Jul 40 |
| Glamorgan | 1938 | 531 (Glamorgan) Coast Regiment | Sep 40 |
| Hampshire | 1924 | 527, 528, 529 (Hampshire) Coast Regiments |
Sep 40 |
| Kent & Sussex | 1924 | 519, 520, 521 (Kent & Sussex) Coast Regiments |
Jul 40 |
| Lancashire & Cheshire | 1924 | 524 (Lancashire & Cheshire) Coast Regiment | Jul 40 |
| Orkney | 1938 | 533, 534, 535 (Orkney) Coast Regiments | Sep 40 |
| Pembrokeshire | 1924 | 532 (Pembrokeshire) Coast Regiment | Sep 40 |
| The Princess Beatrice’s Isle of Wight Rifles |
1937 | 530 (The Princess Beatrice’s Isle of Wight Rifles) Coast Regiment |
Jul 40 |
| Suffolk | 1924 | 514, 515 (Suffolk) Coast Regiments | Jul 40 |
| Thames & Medway | 1938 | 516, 517, 518 (Thames & Medway) Coast Regiments |
Jul 40 |
| Tynemouth | 1924 | 508, 509, 510 (Tynemouth) Coast Regiments |
Jul 40 |
Page last updated on 02/11/25.
