Wt 325
WT 325 was a 213 Sqdn Canberra B(I)6.
I was on the line that night and seem to remember that it was one of (I think) 4 aircraft involved in a bombing competition (possibly Salmond Trophy). Bombs would have been 2 x 2 25 pounders on the wing pylons.
All of the above is subject to my fading memory, and correction from anyone with a better recall...is it really almost 40 years ago?