Moving To America From The UK Immigration laws and Qualifying Standards
For most people, there are pretty much 2 options, get an H1B visa or get married to a US citizen. For a UK citizen things a little less complex because you can actually visit the USA for 90 days without getting pre-approval from immigration.
So you can travel to the USA , mingle with the natives, talk to an attorney or two and get a clearer picture of what you really can or cannot do, of course if you happen to fall madly in love in that time period, all the better for you.
The H1B visa used to be something of a 'slam dunk' method of moving to the USA a few years ago, but with the job situation being what it is right now, I imagine it may not be so easy to get an employer to sponsor you.
I guess I should step back and define the H1B here..
The H1B visa is a visa that allows employers who cannot find qualified US residents for a particular position, to go abroad and hire someone, provided they can show they made a reasonable effort to try to fill the position locally, AND they pay the foreigner at the same rate as they would pay a US resident. The Visa is for an initial 2 years, and is renewable for up to 6 years
In the past, most of these jobs were in technology related fields, so if that is where you presently are, then you already have an advantage.
With the economy being what it is now, I imagine you would need to have pretty special skills for an employer to want to go to such lengths for you, but hey it's worth a try.
Remember, I am not a lawyer, talk to a qualified immigration attorney before you make any immigration related decisions. Take my advice entirely at your own risk