I have already blogged about The Kingsway tram subway in London, having only seen the entrance from the surface. To do a tour inside had been on my "to do list" for a while, and in March 2022 I was able to make a booking for a tour over the Queen's Platinum Jubilee weekend in early June 2022. Tours are organised by London Transport Museum Hidden London and will run in June and July.
This is the tram entrance to Holborn station. The poster shows the original shape, an arched entrance, which was later enlarged and squared in 1929 to accommodate the double-decker trams.
These are the only surviving tram rails in London (excluding the modern present day system around the Croydon area).
These are the pedestrian entrances to the station, looking south and then north -
The walls in places are lined with glazed bricks