London Ambulance Service (LAS) has called on people to call 999 only in life-threatening emergencies as calls reach levels last seen during the height of the pandemic. With weather conditions set to continue for several days, we moved to our highest level of response and are maximising the numbers of staff on the road and in our control rooms. Older people, the very young and people with pre-existing conditions are more at risk in hot weather – so please look out for neighbours, family or friends who may need some help and make sure they are able to keep cool during the heatwave