The British standard blind flying panel and its component instruments have for many years fulfilled a very useful purpose, but there are now a number of special operational requirements which this panel no longer meets. For instance, the probable general use of tail warning devices will make it necessary for the night fighter pilot to follow the violent evasive action of his quarry, and because of the higher speeds involved it is desirable that the pilot should be able to interpret his radar scopes himself rather than depend upon his navigator for directions.