IMHO a VFR flight plan in the UK is just a paperwork exercise. As long as Jersey gets it that should be fine and I am sure that Skydemon sorts that for you.
You should very rarely have to add anything the the standard addressing.
As to diversions, you don't have to put any on a VFR flight plan (in UK/France anyway). Have a few sensible places in mind though.
Last edited by Romeo Tango; 3rd August 2017 at 09:22.