But it was his words: "Ladies and gentleman, I am a police officer, " when he first entered the carriage, that calmed those who he evacuated and let them know someone had come to help.

BBC: INSP STEPHEN MINGAY MBE, BRITISH TRANSPORT POLICE

Bearing all this in mind, including what many of the BBC website readers think of us, I love my job and I am proud to be a police officer and serving the community in the way I do.

BBC: Is crime being tackled properly?

Now I wouldn't like to give you the impression that I am a serial offender, but last year I had another encounter with a police officer, on the M5 motorway, along which I had been proceeding at a speed some several miles an hour above the statutory limit.

BBC: Police-speak: An appreciation