Armour:
Main belt:
4.5-inch (110 mm) with 1-inch (25 mm) closing bulkheads (Berwick, Cumberland, Suffolk, Kent & Cornwall only, from 1935–)
Lower deck:
1.25-inch (32 mm) over machinery
1.5-inch (38 mm) over steering gear
Main box citadels:
1–4-inch (25–102 mm) sides
1-to-2.5-inch (25 to 64 mm) crowns
Turrets:
1-inch (25 mm) faces, sides, rears, crowns & barbettes
Main belt:
4.5-inch (110 mm) with 1-inch (25 mm) closing bulkheads (Berwick, Cumberland, Suffolk, Kent & Cornwall only, from 1935–)
Lower deck:
1.25-inch (32 mm) over machinery
1.5-inch (38 mm) over steering gear
Main box citadels:
1–4-inch (25–102 mm) sides
1-to-2.5-inch (25 to 64 mm) crowns
Turrets:
1-inch (25 mm) faces, sides, rears, crowns & barbettes