Have a plog handy - London Info will ask for estimates for 50 North (at least).
Be careful!! wear life jackets, be prepared for poor vis/horizon over the sea and believe the DI / AI.Have a diversion plan - it was CAVOK at Jersey and Guernsey today but Alderney went foggy. Be aware of the VFR routes in/out of the Jersey Zone and expect to use them.
If in doubt about anything in or close to the Zone ask ATC - they are very good at Jersey and used to inexperienced cross channellers, but not mind readers...
Enjoy