These old arguments continue to surface regularly. If you repatriate income earned in the USA then you are tax-liable. If you have a significant portfolio in terms of capital value and income then you need the advice of an offshore specialist. You can vest the ownership of such domains offshore and operate a 'lend/lease' agreement whereby a modest amount of income is paid to you in the UK by your offshore entity. This allows you to repatriate and declare funds to suit your circumstances. It can also obviate capital gains tax if you should happen to have high value sales. But then you have to be prepared to keep your money abroad.
Quite frankly, I have never seen an accountant declare themselves as such, and then suggest tax evasion, even on a personal basis. Tax avoidance is fine, but hey, this is serious stuff.
See an accountant. Stay within the law and be prepared to be able to declare all of your interests to HMIT. They are not stupid. You can mitigate your exposure to tax liability but transparency is the key.
My 2p.