If you're looking for remotes in stock, check out www.amazon.fr - they have stock and will ship to the UK.
The site layout is the same as the UK site. Try using an internet translator if your French isn't good. Worth it if you don't want to spend hours trawling the net to find where they are in stock.
NB. They will NOT deliver Wii consoles to the UK, but they will deliver remotes and nunchucks.