Blimey some of the advice is to take half a bleedin workshop with you! lol
Make sure you put a hi vis jacket on the rear parcel shelf - the cops can see it and are less likely to stop you.
GB
sticker NOT required if you have GB number plates.
Warning triangle, et etc.
Really, anything else would be as if you were driving a long way in this country. Just use your brain. They have shops, phones, cash points and garages in europe! Its not like you're driving across a dessert or something!
There's nothing to driving in europe. Its the same as driving here but better and faster.