please empty your brain below

But what about Lea bridge station. That’s in Waltham Forest (just). And is only served by greater Anglia.

dg writes: Ah, the perils of slightly-out-of-date spreadsheets. Post updated, thanks.
Shouldn't Havering be shown in white, not blue? Only three of its nine stations have any non-TfL services, and only one of those exclusively so.

Bexley has a TfL station (Abbey Wood) but it is currently only served by an NR operator.

dg writes: My categorisation isn't about who runs the service, it's about whether the services are 'Tube', 'Overground' or 'any other form of rail service'
So "TfL Rail" is (for now) included in your "other" category?

dg writes: It's Overground week, So my dividing line is 'Overground' and 'not-Overground'.
I think you've forgotten that LB Richmond is on both sides of the Thames - and the part north of the Thames has no Tube or Overground stations.

dg writes: No, I didn't forget that. I simply chose not to write "boroughs wholly north of the Thames", because that might have made me sound like a niggling pedant.
As it's not clear how you are defining National Rail v Overground stations you could read the list differently depending on are you going by station with an Overground service or station run by Overground.

Wandsworth is another borough with no Overground station run by the operator. Clapham Jct is officially run by SWR and Battersea Park by Southern. Wandsworth Road doesn't count as it is in Lambeth.

All Hammersmith & Fulham's Overground run stations are also served by a National rail operator - Southern.

dg writes: My categorisation isn't about who runs the station, it's about whether the services are 'Tube', 'Overground' or 'any other form of rail service'.
» An Overground borough is a borough in which over 50% of the stations are served by Overground trains.
» A National Rail borough is a borough in which over 50% of the stations are served by National Rail (non-Overground) trains.
» A Tube borough is a borough in which over 50% of the stations are served by London Underground trains.
By those definitions it would be possible for a borough to be of more than one type if it had a lot of multimodal stations (although none actually are).
Agreed. With those definitions, several boroughs could have ended up multi-coloured, or blank. But unexpectedly 32 out of 33 ended up a single colour, hence I drew the map.
Hmmmm isn't Shepherd Bush Overground station also served by the National Rail Southern service to Milton Keynes from West Croydon, one per hour?

dg writes: Agreed - my database was incorrect. Post updated, thanks.
They talked about having Overground services in Sutton (from W.Croydon to Sutton), but it was decided that commuters wouldn't have been happy to have their 8-car trains replaced by 4-car (as it was then) trains.

Interesting that no-one cared that most of them wanted to go to Victoria anyhow. Just that there wasn't capacity to add enough Overground services to make up the train capacity issue.










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