Tax experts?

if one is a non-UK resident will he be liable to pay income tax on his rented property in the uk.

Basically, if you are not resident in the UK, you are still liable for UK income tax on any UK sourced income. I would suggest you join the NRL scheme to receive your rents gross of tax. It's not an exemption, you would have to complete a tax return each year. You can minus expenses off your rental income such as mortgage interest, repairs, agent fees, etc. You may also still be entitled to the UK personal allowance.

See http://www.hmrc.gov.uk/cnr/nr_landlords....

Yes he will have to pay tax either in the UK or in the country he is resident in.

To receive the rental income free of UK tax he will have to apply to the inland revenue for exemption.

If he doesn't either the letting agent or the tenant themselves becomes responsible for deducting and remitting the tax to HMRC.

If he has no UK tax liability then he will have to declare the income wherever he lives.

Yes on any rental income and capital gains tax if you resell at a profit.

Are you confusing this with taxation of non-dom overseas earnings - these are people living in th UK with income outside and not received in the UK.

On 'double tax relief' its not that simple depends on the country but essentially most contries allow you to deduct any tax paid in the UK from any tax payable to them obviously only up to th limit of their tax - they wont give a refund!

Yes he would. You would only be liable for your UK assets however, but beware; you may also be liable in your country of domicile.

Most countries will agree that only one should take the tax though. Speak to HMRC.