The driver started running as passengers fled from Stockwell Tube station following the shooting of a man it has since been revealed was unarmed.
According to officials from the train drivers' union Aslef, the train driver was chased by police who on catching up pointed a gun at his head.
Hearing about this outrageous behavior by armed cops given orders to shoot to kill, many train drivers have been understandably reluctant to continue working normally, the union's London officer Steve Grant has reported.
He said this incident highlights the tense atmosphere that his members are having to cope with since the 7th July attacks.
Apparently police have since apologised, which I am sure will have made the driver involved feel much better.
So, with armed tigger happy homicidal cops running around London we now have something else to worry us. We are therefore forced to raise the unofficial terror alert to 'dont run!'.
This highten security level means - don't wear bulky or baggy items of clothing if you are dark skinned - if you see police, walk at a resonable pace away from danger - whatever you do, do not run!
Tube driver had gun pointed at head
The driver of the London Underground train involved in the latest terrorist scare was chased by armed police and had a gun held to his head as he tried to escape the scene of today's shooting, union officials have claimed.
The driver started running along an underground tunnel as passengers were fleeing from Stockwell Tube station following the shooting of a suspect.
He was followed by police who briefly held a gun to his head, according to officials from the train drivers' union Aslef.
When other drivers heard about the incident they were reluctant to continue working normally, said Steve Grant, the union's London officer.
He said the incident highlighted the tense atmosphere staff were having to cope with during the present crisis.
Mr Grant said police had since apologised about the incident.