Prototypes, 1952/54. 2
B Mk 1, 1956, Lengthened nose and reduced height fin compared to prototypes; carried H2S radar. 50
B Mk 1A, 1960, Upgraded B Mk 1s with added ECM equipment in blunter tail cone. 24
B (K)Mk 1A, 1965, Two-point tanker conversion of B Mk 1A. 6
K Mk 1, Three-point tanker conversion of B Mk 1. 11
K Mk 1A, 1965, Three-point tanker conversion of B Mk 1A. 14
B Mk 2, 1959, Increased wingspan, underwing fuel tanks, revised intakes, and more powerful Rolls Royce Conway engines. Adopted to carry Blue Steel stand-off bomb. 34
B Mk 2R, 1964, Uprated B Mk 2 with more powerful Conway 201 engines and Red Steer ECM equipment. 21
B (SR) Mk 2, 1965, Strategic reconnaissance version with additional tankage for longer range and provision for various camera fits. 9
K Mk 2, 1975, Three-point tanker variant converted from B 2s and SR 2s. Reduced wingspan to help extend fatigue life. 24