Legal Research Required

I require research including case law on the following: An associate dentist works in another dentist's practice, there is no written contract only an oral contract. That contract is the associate dentist pays the practice dentist 50% of his fees, lab fees etc. are split at 50%.The balance outstanding to the associate is paid monthly. Four years later the associate leaves the practice. The associate wishes to take his patients with him.

What is the notice period required to be given to the practice dentist. Who owes the good will of the associates practice ? Who owes the patient records? Who owes the work in progress of the patients?

Case law ideally needs to the dentally related or otherwise from a very similar scenario, any precedents in this type of matter set by case law. All English law.

Must be completed within two weeks