Here are what they have round hereOVER the last year Private Eye has revealed the extent of ownership of British land by offshore companies, generally for tax avoidance and often to conceal dubious wealth. Now the Eye has created an easily searchable online map of these properties, revealing for the first time the British property interests of companies based in tax havens. Using Land Registry data released under Freedom of Information laws, and then linking more than 100,000 land title register entries to specific addresses, the Eye has tracked all leasehold and freehold interests acquired by offshore companies between 2005 and 2014.

and here is the link
If anyone else knows more, you can email them on offshore@private-eye.co.uk
NB - I might previously have posted this in the thread Transparency, but that is now only accessible to logged in users. If further posts on this thread stray from the local and factual, I hope Admin can consign them to the Pub, without affecting this OP.
I might also add that I have no problem with overseas ownership of properties per se - it's just the lack of transparency which for me is a problem.