UK family Court jurisdiction in the overseas properties

As my Ex has put lots of historic overseas properties which were either sold by me to my sisters a long time back in 2013 or not belong to me. I am giving evidence by my sister in terms of witness statements which we will submit before the final hearing only.

As the UK family court doesn't have any jurisdiction overseas, then in the final hearing, how can the court contact my sister or email them or enquire further documents from overseas?

I just want to understand the legality of these jurisdictions so that I can prepare myself much in advance as in the worst cases.

If UK family Court has jurisdiction in the overseas properties and more precisely if court/judge can pass judgements/ direction to a third party ( Not the applicant or respondent ) or contact them, directly to provide any pieces of evidence or witness statements or any other documents whatsoever ..