The firefighters who died in the fire at Bicester Motion have been named as Jennie Logan and Martyn Sadler, while the member of the public who died is David Chester, Thames Valley Police said.
The Oxfordshire Fire and Rescue Service firefighters died while tackling the blaze at Bicester Motion on the edge of the town on Thursday.
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.
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