Oak Insurance Brokers are leading Insurance Brokers to the Security Industry. Door Supervision security has always been an area Security Insured has specialised in. Not all policies are keen on a heavy amount of door supervision and Insurance can at times prove very costly in this area. No matter if you are working at Festivals, Pubs, Bars, Clubs or simply on the door of a Hotel we have the right cover available for you always at a competitive rate.