Hawk T1 - Trainer Mark 1 was the original version of the Hawk used by the RAF, deliveries commencing in November 1976. 175 built.
Hawk T1A - modified Hawk T1, can carry AIM-9L Sidewinder air-to-air missiles and a centreline Aden gun pod. Used by the RAF's Red Arrows display team..
Hawk 51 – Export version for Finnish Air Force.
Hawk 66 – Export version for Swiss Air Force. 20 built. [1990~2002]