Thanks all for the advice. First attempt was fogged off but will be trying again soon.
I have presently settled on EGKB, OCK, DEVIZES VRP, BATH VRP, CHARMY DOWN, PORTISHEAD VRP at FL45 (well from North abeam Odiham anyway) then descend into Cardiff Docks for join to EGFF probably from the North (Wenvoe Mast).
I will take a closer look at your route BEagle........
Regards
Barney