Paul - Sincere apologies for the delay in responding to your query.
Please refer to the
Joint property ownership guidance on GOV.UK. It provides some indication on where to look for the information you are seeking.
From land registration perspective, w
e would normally enter a restriction when two or more persons owning the land or property wish to own it as Tenants in Common. The restriction, commonly termed as a ‘Form A’ restriction reads as:
“No disposition by a sole proprietor of the registered estate (except a trust corporation) under which capital money arises is to be registered unless authorised by an order of the court.”
I should clarify that people often think that the above restriction on their title register means that they are tenants in common. But that is not always the case as the same restriction can be registered for other reasons. For example, we have to enter this restriction when we register joint owners but it is not clear what type of joint ownership they have.