To make it brief; Am I screwed? (£100 fine and 3 points on license)
I ran a few rounds around the road and can confirm that there weren't any red-light cameras. So the only worry is the ambulance passing my information and evidence of my mistake to the cops.
In my defense, I didn't expect to see a traffic light only a few yards after another traffic light while I was going downhill. Furthermore, a few seconds before I realised I was in the wrong lane and since the roads ahead were clear I wanted to overtake quickly and in my complacency/hastiness went past the traffic light while I was eyeing the car I was going to overtake in the next second.
I've ran red lights before at night but never in front of emergency services. Ambulances aren't police cars, but the worry exists that they have some fort of traffic enforcement powers.
If you got experience or have witnessed anything like my situation, then let me know.