One of the cameos they 've not shown on BBC2's The Tube is the person taken ill on the train. As we were waiting to leave Oxford Street on an eastbound Central line train last night, the driver asked if there was anyone who was a doctor, a nurse, or who had some form of medical training if they could leave the train to help someone who he said was "...not in a good way..." or words close to that.

Whether anyone did I'll never know, the doors closed and we left, and as we did, picking up speed, I saw numerous passengers looking in towards one part of the platform at a small group of others including a station assistant huddled around someone Lying on the floor with another, and possibly this was that someone who had responded to the driver's request, seeming to be asking questions.

For some quite inexplicable reason this scene has frozen into my memory.