Military Unit Records
- Hm Dockyard Chatham
- Hm Dockyard Devonport
- Hm Naval Base Clyde
- Hm Naval Base Portsmouth
- Hm Naval Base Devonport Plymouth
- Hm Submarines
- Hmas Manchester
- Hms A1
- Hms A10
- Hms A3
- Hms A4
- Hms A5
- Hms A7
- Hms A8
- Hms Abdiel
- Hms Aberdeen Sloop
- Hms Active Pennant F171
- Hms Adamant
- Hms Aeneas
- Hms Affray
- Hms Afrikander
- Hms Agincourt
- Hms Ajax
- Hms Alacrity
- Hms Alaric
- Hms Alaunia
- Hms Albion
- Hms Alcide
- Hms Alderney
- Hms Alert
- Hms Alfriston
- Hms Alliance
- Hms Amazon
- Hms Ambuscade
- Hms Ambush
- Hms Amphion
- Hms Anchorite
- Hms Andrew
- Hms Andromeda
- Hms Anson
- Hms Antelope
- Hms Antrim
- Hms Anzio
- Hms Apollo
- Hms Appleton
- Hms Ardent
- Hms Arethusa
- Hms Argonaut
- Hms Argyll
- Hms Ariadne
- Hms Ark Royal
- Hms Arrow
- Hms Artemis
- Hms Artful
- Hms Ashanti
- Hms Astute
- Hms Atherstone
- Hms Auriga
- Hms Aurochs
- Hms Aurora
- Hms Avenger
- Hms B10
- Hms B2
- Hms Bacchante
- Hms Barham
- Hms Battleaxe
- Hms Beachampton
- Hms Beaver
- Hms Belton
- Hms Berkeley
- Hms Bermuda
- Hms Berry Head
- Hms Bickington
- Hms Bildeston
- Hms Birmingham
- Hms Blackcap
- Hms Blackpool
- Hms Blackwater
- Hms Blackwood
- Hms Blake
- Hms Bluebell
- Hms Bossington
- Hms Boxer
- Hms Braganza
- Hms Brave
- Hms Brave Borderer
- Hms Brazen
- Hms Brecon
- Hms Brereton
- Hms Brighton
- Hms Brilliant
- Hms Brinton
- Hms Bristol
- Hms Brocklesby
- Hms Bronington
- Hms Bulldog
- Hms Bulwark
- Hms Burnaston
- Hms C11
- Hms C12
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