Selling Shares as a non UK tax resident

I have had shares (both paper and electronic) issued by a previous employer ("bonus", so never paid for them) a number of years ago. I am no longer a UK tax resident (living the the EU now). I want to sell the shares or transfer them to a family member (UK resident). What I wanted to understand what tax I would need to consider, either with a sale or with a transfer. If I sell them, how do I calculate capital gain? I dont know when exactly I was given them. What would be a gain as they were issued as a bonus? Any info / links / reading would be much appreciated.

Hi neekulp,
Individuals who are not UK resident for tax purposes are not subject to CGT on shares in UK companies, unless they return to the UK within five years of leaving. Non-UK tax resident individuals are, however, subject to UK CGT on gains on property and land in the UK.
Thank you.