Blind Landing Experimental Unit Bedford; first aircraft to carry out Cat 3 landings.
Indeed it was - taken at Liverpool.
When the new runway was built at Liverpool it was rarely used - it was a looong taxi to the terminal. BLEU took this golden opportunity to shoot endless ILS's which, in turn, brought us some nice Boscombe aircraft. Regular visitor apart from the Varsity was the Short Belfast XR364(?) but I also recall their Harvard, FT375 and a Meteor NF13, WM367.