Please can you explain what you mean by 'there is no title '?
Every property have a title and each transaction compulsory registrable since 80s.
In the absence of any declaration of trust you will either own jointly or 50/50.
What happened? You and wife own the property? Who contributed to purchase, you and wife? What about xx? Who is xx, wife or third party?
I trust there is no declaration of trust referring to xx or second charge?