John,
You shouldn't post your *intentions* on a public forum visible to the HMRC and the IRS. Your intentions may change once you know the consequences of hose intentions. Intentions can not be proven, but once you put them in writing, you kind of stuck.
There are loads of exemptions for people intending to stay for two years or less; extendable to three years. You'll want to discuss these options over the phone with a qualified UK accountant rather than in writing for the reasons given in the previous paragraph.