There is a VFR route from Isle of Wight to Cherbourg peninsula or alternatively fly direct from the needles to a waypoint called Ortac
Talk to Jersey Zone and then Alderney and plan direct route at 3k
Don't forget must be VFR or SVFR for entry into class A zone
Bring dinghy, life-jackets and PLB
Easy route but be conservative with weather forecasts and back up GPS with good plog and SAM VOR Radial. You will get a service from Bournemouth and then Jersey Zone.
Hope you have a great flight !