The new British government’s summer Budget includes two significant items affecting non-domiciled residents from April 2017. Individuals who have been UK-resident for more than 15 of the past 20 years will become liable to UK tax on all overseas assets. Even if you managed to fly the coup, all non-domiciles’ UK residential property will be liable to UK inheritance tax whether held directly or indirectly via an offshore structure. So if you have property back in ol’ Blighty, it could still be in the net.
There are also some fish hooks that could result in you still being considered UK-resident. Something as simple as your will wishing to inter your remains (or not specify otherwise) in the United Kingdom could result in you being considered UK-resident. It would be timely for you to review your Will.
It is important that if you have originated from the United Kingdom, or have assets in the United Kingdom (that means you too Kiwis!), you familiarise yourself with the tax implications your Estate could have. Non-payment can carry significant penalties and Her Majesties Custom & Excise don’t accept ignorance as an excuse!