Potentially controversial opinion...very much my own opinion.
The Hazardous Area Response Team, or HART, is the part of the ambulance service that is designed to deliver paramedic level care in dangerous places, it's not a job I have a desire to do, not ever applied... However, with 15 years of being an NHS paramedic under my belt, I have yet to come across a job where they have been able to bring anything that another service can't do better. Examples include, attending a shooting (the police will be in the danger zone and no one will be giving any advanced care until either the pt is removed, likely by police, or the shooting has finished), cliff incidents (coastguard are fully able to retrieve a patient), fires, confined spaces, working at height, dangerous gasses ect ect, all rescued by fire. There is never really a need to deliver paramedic level care in an area of such high danger. In my experience with them, they have an incredibly overinflated view of themselves, not helped by programs such as "999 rescue squad". A plane crash I attended when I was alone on a car is another great example. I was sole medic for around 20mins, giving updates and providing care ect, HART arrive and tell me they have special intrinsically safe radios to use...by which time fire and myself and a crew have already extricated the PT and treating them, and myself, the police and fire have all been using our normal radios. They should be disbanded and placed back into "normal" operations.... Don't even get me started on SORT!