I have not examined this too carefully as my eyesight has recently
worsened.
I thought of a quiz question....
Q: On the 12 main Tube lines [i.e. not DLR or overground, although I
think they could be included] there is only one occurrence of a
station ending in Street being adjacent to a station ending in Street.
That may not be clear.
What I mean is that on one of the major London Tube lines there's a
_____ Street followed on the same line by a ______ Street.

If I'm still in a wifi area I'll give what I think is the unique
answer in an hour, ie at about 17:15.