Merlin,
I live in the LHR area and to be honest I had an awful lot more disposable income when i worked for a biz jet company in Dallas than I have now, and I thoroughly enjoyed my time there, salary aside, l would recommend to anyone trying to start a Flt Dispatch / Ops career to give the biz jet companies a try first, lot more varied and you learn quickly, lets face it, its highly unlikely that you are going to walk into any US major carrier as an 'off the street' dispatcher...they tend to hire from the minors or subsidaries, ie Eagle, Mesa etc so if i were moving westward again and looking for a job as a dispatcher at entry level, I would try all avenues...I dont think any of us are in this for the money though are we??
Commander,
If you get your FAA License, chances are the school will help you find employment....if you are legally allowed to work there that is...