if u can get to Reading by the Friday lunchtime you can join me, should mean a 9or10am start for you, how far North are you?
its around 6-7 hours from Reading to the Belguim/Luxembourg/German border including the Ferry crossing
with a bit of blitzkrieg i reckon its an 9hour journey to the site
arrival should be approx sunset which will be perfect for putting up the tent and cracking open the beers!
i've done the same trip about 3 times before, both by motorway and once by backroads, its 100% do-able
Hartside did the entire return trip in 2.5days, but with the extra distance to/from Carlisle

Tony, if its ok with you, I would be pleased to join-up with you guys as I only live about 40 miles from Reading...we could even meet at clackets lane services on the M25?