Mk Va
Engine: Merlin 45
Wing: A
Armament: Eight .303 machine guns
F.Mk Vb
Engine: Merlin 45, 46
Wing: B
Armament: Two 20mm cannon and four .303 machine guns
L.F.Mk Vb
Engine: Merlin 45M
Wing: B
Armament: Two 20mm cannon and four .303 machine guns
F.Mk Vc
Engine: Merlin 45, 46, 50, 50A, 55, 56
Wing: C
Armament: Two 20mm cannon and four .303 machine guns or four 20mm cannon.
L.F.Mk Vc
Engine: Merlin 45M, 50M, 55M
Wing: C
Armament: Two 20mm cannon and four .303 machine guns or four 20mm cannon.
Notes: First use of altitude specialist marks.