As far as I can work out the building I work in must have replced earlier ones that were destroyed by bombing.
The site isn't workng well enough for me to drill down to the details but I'll have a look later 
What is interesting is if you look at the ones that are further out you can see how they fall in lines i.e. a stick of bombs from a single aircraft. Presuming some of them jettisoned their loads to avoid flak, searchlights etc. or even had mechanical problems, it does also beg the question what on earth the rest of them thought they were dropping their bombs on - unless they really did want to blow up British golf courses!
Edited: 07/12/2012 at 13:42