Mount Pleasant

There is a railway station very close to Mount Pleasant - London's newest in fact, as it only opened last year. I don't think it really counts though, as there is no other station on the line.

Non-TfL stations

There are two non-TfL served stations within the Square Mile itself - Essex Road is probably the next innermost to produce the minimum three points needed to define a polygon!

Buses outside London

TfL fares are now charged on the 465 all the way to Dorking, but, as with the old 131, 'twas not always thus. Awkward, actually, as the nearest Oyster top up point to Dorking is several miles away in Leatherhead

The London Country bus area extended from Northfleet to Aylesbury, and from Hitchin to Crawley.

The date of Easter

The Spring Equinox doesn't always fall on the same date in the Chinese and Gregorian calendars, because they are based on different meridians (if the moment of equinox is early on Monday morning in China, it is still Sunday evening in Europe). And Easter is calculated as if the equinox always falls on March 21st anyway.

The size of buses

Some motorbuses are quite small.

In 1961 the latest Routemaster buses were about 9m long, about one third the length of "Dippy the Diplodocus" in the NatHistMus (26m).

The longest buses ever to operate in London were 18m long. But since 1961 much bigger dinosaurs have been discovered.

ID passes

My pass lives in my shirt pocket when I'm not in the building. As well as being badly worn, the photo on my pass was taken when I joined the company more than 25 years ago, so I don't look much like my photo anyway - my son actually looks more like it than I do.

RV1 PVR

The peak vehicle requirement for the RV1 is just six. Of the dozen or so other routes run from the same depot (where the refuelling facility is) none have a PVR of less than 10. Whether a fleet of 12 is sufficient to meet a requirement for at least ten to be on the road I wouldn't know.

Stationlink

The northern leg of the circular SL1/SL2 morphed into the 205 in 1999. The other three sides of the square became the short-lived 705 which duplicated parts of many other routes. It became redundant when "accessible" buses became the norm on all routes.

Hydrogen buses

Tthe first hydrogen buses in London, back in 2004, were used on the 25.

So far only one depot has the refuelling facilities, but that depot serves more than a dozen routes.