Units 

Boeing, the current AH-64 manufacturer, took over McDonnell Douglas, who in turn had taken over Hughes, the original Apache designers, all work is carried out at Mesa, Arizona.

Agusta-Westland is the helicopter company based at Yeovil who are responsible for final assembly and support.

QinetiQ at Boscombe Down performs test and evaluation functions for the MoD.

2 Regiment AAC        at Middle Wallop is the main Army Air Corps Training Centre

651 Sqn        was the "fielding squadron". Once the Apache had been introduced into service, it's role was no longer required and the squadron disbanded.

667 Sqn        is the trials unit (previously the D&TS)

673 Sqn        is responsible for converting AAC crew to the Longbow

3 Regiment AAC            at Wattisham are assigned to 16 Air Assault Brigade 

653 Sqn    

662 Sqn   

663 Sqn   

4 Regiment AAC            at Wattisham are assigned to 16 Air Assault Brigade 

654 Sqn    

656 Sqn        

664 Sqn   

9 Regiment AAC            at Dishforth introduced the Apache into operational service. Its units subsequently moved to Wattisham under 4 Regiment 

7 Battalion REME        at Wattisham take care of major in-field maintenance, and many minor modifications

Air Manoeuvre Training Advisory Team (AMTAT) moved to each unit in order to help prepare for Apache introduction