Hello, can anybody help me please.

Married a Turkish gentleman in 1995, he abandoned the family in the UK in 1997, but neither of us ever seeked divorce so we are still legally married.

Now after 11 years of his abandonment, I wish to divorce, can someone tell me if I am entitled to (a) 50% of his assets he had back in 1997, the date he left us, or (b) 50% of his current assets?. His worth today is considerably more than back in 1997. And what about my assets, does he have any claim to them?. I should add he left us without any support for 10 years.

Also, i found out he married again, but as we never divorced, that marriage is illegal, but in the divorce case, will judge consider him as having 2 wives or 1?. I have ample proof that he knowingly committed bigamy & deceived Turkish courts. Would filing in the UK or Turkey make more sense?. Thanks a lot.