Thanks again to everyone for the help. I've now picked up a Beausejour camping ticket (£50 of eBay). I know it's only encouraging them - but at least I'm sorted. Some of the prices are just plain daft.
The main concern now is getting the Healey up and running - the engine is currently out awaiting a rebuild/upgrade! Also I'm not entirely sure how tents, sleeping bags etc will fit in - given that the boot will be full of spares. I gather there's a Carrefour nearby........
Cheers again.
HealylHundred