Interesting observations. *Looks like there is a concerted programme of
work to get validators installed on at least 3 TOCs (FCC, FGW, NXEA).
Any signs of life south of the river?


Sanderstead, Riddlesdown and Upper Warlingham on Southern all seem to
have them, and I'm sure I spotted ones at Woldingham and Oxted (out of
zone 6) too, but I'm not sure.