The six new names for London Overground lines and what they mean
https://www.railwaygazette.com/uk/london-overground-routes-get-new-names/65937.article
There are some railway lines which are not named due to some reasons.
Most of the reasons are below.
・The section of the train service is completely changed from original line name.
・Freight railline was converted to passenger rail without naming.
・Ownership of the railway line is so complicated that it's difficult to name.
・Single railway company expanded railway network. And the company name has such a strong brand as to delete the name of the individual name.
I don't know London Overground has which background.
