i want to build a property in Crete, i live in London, if i was to make a profit on sale, would i pay tax?

i work and live in london, which means i pay tax here, i want to know if i was to build and sell a property in Crete or Bulgeria would i pay capital gains tax there in that country and then bring the money here in London, would i then be taxed here. What would be the tax in Crete and Bulgaria, if any.



thanks



Chris