On 12 May, 21:35, MIG wrote:
On 12 May, 21:23, D7666 wrote:
On May 12, 9:21*pm, D7666 wrote:
I mean a normal scheduled train, not a heritage event or open day
working or crankex.

A bog standard normal service.

And since London Transport and its successors have existed?

On Steam on the Met 1993 (IIRC) the green 121 Bubblecar was used as
Chesham Branch Shuttle. But that doesn't count.

Otherwise, there was this:
http://tinyurl.com/3x5gcjp

Or are we talking DEL 120?

Andy