Just a side note to AA, in the UK as I'm sure you know Class A is the equivilent of USA class B, which you cannot enter with out a specific class bravo clearance (unless there is a VFR corridor in operation). Same applies here.
The Channel Islands are a good day out, you'll need to file a flight plan, and fax Special Branch, but its a good experience. You'll find that once you near Jersey zone it'll be just like flying in the USA with VFR flight following. Jersey was £9 landing last time I went and Alderney gives you a discount if you take on fuel, and I think it works out at about £6ish...plus you can get the duty frees and claim back the tax on the fuel bought in the UK. (Not to mention the good curry house on Alderney)
Cheers
EA