This came up recently at an event I have attended - basic points from the discussions were:
- If with Farnborough - request MATZ penetration (but don't assume you have it until a positive clearance has come back - be aware lots of phonecalls between Farn and Odiham going on to accommodate the crossing!)
- Call in plenty of time, can call Odiham approach direct for crossing
- Always best to be speaking to them as you transit the MATZ due to the profiles of the aircraft flown and possible conflictions.