Capital Gains from selling a family property in Norway

I am a Norwegian citizen with a Norwegian passport only, who has spent 50 years living and working in the UK and now a pensioner. I own a flat in Oslo which is a second property to our house in London. I have owned it for 20 years and it has served a " home from home " - being a place that I travel to several times a year to visit family. My parents have needed a lot of care and looking after in the last few years and not being able to stay with them, the flat has been invaluable. From a Norwegian tax perspective, this flat will be sold completely tax free - as we have never rented it out or profited from it. If Norway charges me 0 in tax, is it true that I shall have to pay 28% Capital gains tax in England ? Or is there a loophole , as I do not have a British citizen ship and the flat has been purely used for visiting friends, family and ill relatives - not for making money. I will happily live there for a year, if this is needed. I hope there will be an exception to this strict ruling.

Hi 

As the house has not been your only main residence for the whole period of ownership,  you will be liable for capital gains when you sell it. the rate you pay depends on your other income so it will be at 18% or 28%. see guidance at Tax when you sell property

Thank you