I have a Veritas Burglar Alarm that needs repairing?

Several years ago I had a Veritas Burglar Alarm fitted. It was fitted and serviced by a Mr. Jason Perry of Regal Security. I can no longer trace him, as both his landline and mobile numbers have changed, so who do I get to service and repair this alarm?

It is a Veritas 8 zone burglar alarm with a panic button.