Thank you for the update Paul. I am so sorry you and your book got caught up in their shenanigans.
It would be helpful if you could share a contact from the 'administrator' or entity that deals with bankrupt companies. I think you and everyone who pre-ordered a copy has a claim. I don't know how these things work in the UK, but when companies go bankrupt in the US, creditors sometimes get paid. I think unfulfilled orders should be compensated.