Following on from my previous question: I had no response

Following on from my previous question:
I had no response to my questions about the money my to my ex. And since I had learned that he received £20000 in May 2014 I contacted a solicitor and asked him to send a letter informing him that unless he paid the money court proceedings would be started.
Almost immediately I received the text message as below:
“ Don’t know why you didn’t contact me direct. Anyhow tax will be paid on shares before they are divided up. I wont find out before year end when I do Jersey tax return. Therefore I’ll make any payment in Feb 2016. I will claim expenses for any court visits.”
He has since replied to the solicitor’s letter with the same answer, he seems unsure what to do about it. Knowing my ex as I do I think this is just one of his ploys to muddy the waters a bit to give him more time; he has done similar thing in the past when threatened with court. In my opinion his tax affairs have nothing to do with the money he should pay to me. Why would he want to pay tax on my share anyway?
He received £20000 in May 2014 from a UK based company (Nottingham)in return for shares he held in the company as a director. There is a court order saying that 50% of this should be paid to me.
He was already living and working in Jersey at the time of payment, and is using this as an excuse not to pay me.
Could someone please advise me if what he is saying is correct i.e. Does he have to pay the tax on the full amount in Jersey before handing over 50% to me?
Regards
Julia