You need to move out of the way if it is safe to do so. My husband drove a fire engine for 25 years and he said that people makes things worse than when they panic and stop dead or stop opposite a traffic island or similar. Even emergency vehicles must obey the highway code but provided they don't cause an accident a blind eye is turned if they jump a red light or go into the bus lane. I suspect the same would be the case for motorists getting out of the way of an emergency vehicle as long as they didn't cause an accident.
Should women have equal pay and opportunities?