My son works for the ambulance service (newly qualified technician) and he's said that they are not allowed to push you into doing anything illegal. If they can't get through they have to wait.
The only place I wouldn’t move for an Emergency Vehicle is at a Red Light Camera if ever required to do so.
No way am I being punished for trying to do the right thing, people have done it and lost the argument.
I get why it’s controlled though as imagine if it was advised to go through red lights for emergency services, would cause so many tragic scenario’s and fake excuses as to why people went through a light.