In partnership with the London, Midland and Scottish Railway (LMS), the LNER was co-owner of the Midland and Great Northern Joint Railway, the UK's biggest joint railway, much of which competed with the LNER's own lines.
LNER, в партнерстве с London, Midland and Scottish Railway (LMS), была совладельцем Midland and Great Northern Joint Railway (M&GNJR), крупнейшей соместной железной дорогой Великобритании, большая часть которой конкурировала с собственными маршрутами LNER.