David,
The Little Guy has a dealer in the UK, if you want the import to Europe done for you:
http://www.littleguy.co.uk/
No prices quoted though, which makes me suspicious.
There are two manufacturers of small trailers in the UK:
The Pod and the Sleeper
Of course, now I realise that the Pod is probably no good for you as it has a left side door only!
The Tardis (with rear door, not hatch)
There is one tiny trailer availalble in many European countries, sometimes called the Going Weekend, but I cannot find a website for it.
Andrew