I have copies BS 381C, FS595B and the humbrol fan deck binder in front of me!!!
Barley/Camo grey 626 = Humbrol 167
Dk Adm, Grey 632 = approx FS36176 = approx Humbrol 156
FS 36280 = approx Humbrol 126
Flint grey FS36280 = approx Humbrol 126
FS36314 = approx Humbrol 167 (again)
FS26492 = approx Humbrol 147
(As a rule of thumb, FS1XXXX is gloss, FS2XXXX is satin and FS3XXXX is matt)
HTH
Gav