How can British expats legally avoid paying tax when they return to become residents in the UK?

What are the legal ways to avoind paying tax after living outside of the UK for 20 or 30 years? What can be done to avoid paying taxes on returning to the UK? How can the UK authorities and the Inland Revenue even know if you were working overseas? How can they even tell how much money you have? A British expat... show more What are the legal ways to avoind paying tax after living outside of the UK for 20 or 30 years?

What can be done to avoid paying taxes on returning to the UK?

How can the UK authorities and the Inland Revenue even know if you were working overseas?

How can they even tell how much money you have? A British expat returning to the UK could of spent all their earnings and hence don't have money to pay any taxes,

How much do the authorities know about where you worked overseas and how do they know how much money you actually have on return to the UK?
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