You definately need to check the NOTAMs, and be aware that there will almost certainly be a short display by something (NOT Concorde, I repeat NOT CONCORDE!!!!!!!)
I'm sure the last thing Filton ATC need on the day is to be over-run with light aircraft calling up un-announced, especially just to fly around and have a look. If you insist, PLEASE give them a call on the telephone before take-off, but please bear in mind my first paragraph..
I'm driving there.
