Chilli monster - thanks for the corrections, I can see you are a local expert - possibly in the tower from your earlier comments.
Well Filton is a great and very friendly place to visit - very much recommended - I hope fully flapped gets there.
As to the accident (and correct me if I am wrong) last time I was there and asked about G-BOAC I was told some one sadly fell from the walk way.
Out of interest I assume the radar is off at weekends due to lack of man power.