PA Media
The fire broke out at Bicester Motion on Thursday and was burning into Friday afternoon
The firefighters who died in a fire at Bicester Motion have been named as Jennie Logan and Martyn Sadler, while the member of the public who died is David Chester.
Police said both firefighters worked at Oxfordshire Fire and Rescue Service and Mr Sadler was also part of the London Fire Brigade.
Ms Logan, 30, and Mr Sadler, 38, died after explosions were heard at Bicester Motion on Thursday, Thames Valley Police said.
David Chester, 57, from Bicester, was also killed, the force added.
Two firefighters sustained serious injuries and remain in hospital, Oxfordshire County Council said.
At the height of the fire, 10 fire crews were tackling the blaze.
PA Media
Chief Fire Officer Rob MacDougall was visibly emotional while briefing media this afternoon
The police have commenced an unexplained death investigation, but are not currently treating it as a criminal matter.
Assistant Chief Constable Tim Metcalfe said: "This is an absolute tragedy and my thoughts and the thoughts of everyone at Thames Valley Police are with the families, friends and colleagues of Jennie Logan of the Oxfordshire County Council Fire and Rescue Service, Martyn Sadler of the London Fire Brigade, and member of the public, David Chester, who have died in this incident."
The force confirmed that officers will remain at the scene for a number of days to ensure the public remain safe.
At the scene today, a visibly emotional Chief Fire Officer Rob MacDougall commended the "unwavering bravery" of emergency services.