Not to be smart about your question, but in the United Kingdom does your Crown Court system give the victim of a crime the right to request restitution? If so, your criminels are caught, I’d ask the Crown Court for full restatution of your goods taken.

I did find this information on line for you:

United Kingdom

The Home Office website has information for victims of crime including:

Victims Virtual Walkthrough - an interactive virtual tour to provide information about the criminal justice system process as it relates to victims of crime
Victim’s Charter
Victim’s Personal Statement
Release of prisoners
Restorative Justice

Good luck and hope you get your goods returned.