Not true at all... I have lived in Guernsey and now Sark. You will have to severe most ties with the UK and you will be only allowed to spend 90 midnights per year in the UK. Also, Guernsey has income tax, it's a flat 20% but also has quite a high social tax (NI) so you can work on about 30% tax to the first 500K after that the NI caps out and it's the flat 20%. The big advantage is there is no Corp Tax so it's a good place to manage a company, but you need to be resident as you need︀ a resident director. I live on Sark which has zero income tax so a better︁ deal if you can make it work..