A homeless man is lucky to be alive after his tent was set alight in a horrifying city centre attack .
The victim narrowly managed to escape after Ian Gordon started several fires, sending the tent up in flames.
Terrifying footage shows Gordon, 51, start the blaze in the middle of Birmingham. Police say they still don't know why he did it.
Gordon was jailed for six-and-a-half years after pleading guilty to arson with intent to endanger life.
He was caught after an officer recognised him from the CCTV images, which were shown to cops during a briefing.