If you bring the money from the sale of the property to the UK, then you may need to pay Capital Gains Tax on the sale of the property.
You would need to convert the purchase price and buying costs, using the official exchange rate at the time of purchase and do the same with the selling costs and disposal value. You can see guidance on tax when you sell your home here:
Capital Gains Tax
You may be entitled to private residence relief for the period that the property was your main home.