We tend to know the more common emergency services, police, fire and ambulance but others such as coast guard, bomb disposal and blood transfusion services also use blue lights.
Look and listen for emergency vehicles from infront, behind and across your path so to avoid making a panicky manoeuvre.
Watch for the path of the emergency vehicle and take any reasonable action possible to try and help it get passed. They will not expect you to break the law. These types of vehicles when displaying blue flashing lights normally travel quickly and although it is important to clear their path, it should be done safely.
Try to avoid stopping on verges, brow of a hills, bends or narrow sections of road as this may damage your vehicle or make it difficult for the vehicle to pass.