Nearly 200 firefighters have been drafted in to drive ambulances as call outs reach 8,000 a day due to COVID-19.
London Fire Commissioner Andy Roe said 125 fighters are currently volunteering for London Ambulance Service, with a further 60 currently in training and set to be dispatched next week.
On average, paramedics are now responding to around 8,000 urgent calls per day compared with 5,000 in usual busy times of the year.
“We’re ready, willing and able to support the national fight in combating COVID-19,” Commissioner Roe said.
“At this crucial stage in the pandemic firefighters have once again volunteered to step up to support a joint emergency response to Covid-19.
“The arrangement will help keep ambulances on the road and get vital care to those who most need it.
“It makes me very proud to see so many firefighters eager to step up and volunteer at such a challenging time.
“Since April 100,000 incidents got an ambulance sooner because we’ve been assisting the London Ambulance Service.”
Along with using blue light driving experience, the fire fighters can also use first aid to help give CPR, and use defibrillators.
While carrying out their duties, firefighters will wear their LFB workwear and be provided with additional PPE.