I use Farnborough Radar - they've never complained yet.
Dude~ - fair enough. Overhead Farnborough is the one I ask for and usually get, but you can always ask for overhead Odiham. They'll say no if it's busy.
Oh, and can you route direct to Southampton? That will take you straight down their approach/departure (depending on runway in use). They're usually happy to let you through East-West, but I thought a North-South transit was fairly rare?