Pilotcpb,
First and foremost you need the right to reside in the EU. If you don't have that the rest is a waste of time.
If you have the right to reside in the EU then you'll need to convert your FAA licence across to a JAR licence which will cost a lot of money if you're a low timer without a lot of experience. Say £10,000??
There aren't a lot of jobs in the UK for low timers but if you have experience there are openings. My company, easyjet, says they have about 5,000 applications on file at the moment from European pilots. At the moment they are getting people in the door by getting to pay them £25,000 ($40000?) for a type rating and a reduced salary
so the UK isn't a honeypot.
At the moment anyone without experience is going to find it extremely tough to get a look in. Anybody with experience on a turbo prop should be able to secure another turboprop position but may struggle to get on a jet at the moment. Anybody with reasonable experience on a jet should find a position on a jet with someone, but perhaps at some cost as paying for your type rating seems to be becoming the fashion.
Hope that helps.