BRL - many thanks for your organisational efforts today - shame we didn't get to meet...
To all at LHR Tower and West Drayton - especially our two guides - thanks very much indeed for a fascinating day and your full and friendly answers to all of our questions.

It gives me a warm feeling to know that such a professional team is looking after us, sometimes in spite of the technology rather than because of it! Long live the paper strip
I highly recommend this visit - the zone infringement radar tapes alone were worth seeing

. Switch your transponders on folks and squawk mode C if you can - it really helps.... Look out also for the team coming to a club near you to talk about zone busting - a very educational presentation.