Returning to the original topic, I also thought about what depot 'serviced' each station.
I always associated Willesden with Euston, as I believed Camden was a stabling point rather than a depot. Having said that, it probably depends on WHEN Camden was the main depot. At the moment, I'd say Wembley is the current depot for Euston.
Bounds Green is the current depot for Kings Cross, but there must have been another depot between Bounds Green opening and Kings Cross closing. Was it Hornsey? There was a depot at Finsbury Park, but I think that was for local freight traffic.
Stratford serviced Liverpool Street until replaced by Ilford, for services via Romford, but did Stratford also supply trains for services via Hackney Downs?
Fenchurch Street is serviced by East Ham, but it looks new-ish. Would Ripple Lane have functioned as its predecessor?
Marylebone had its own depot immediately north of the station, east of the line (now occupied by housing, north of Rossmore Rd). What's its depot now?