British Railways (Merseyside PTE)

'British Railways (Merseyside PTE)' refers to BR commuter services operated under specification by the Merseyside Passenger Transport Executive (Merseyside PTE, today branded Merseytravel) from the formation of the PTE in 1969. Merseyside PTE specified service patterns and rolling stock for the third-rail electrified Liverpool suburban network, the Wirral, Northern and (briefly) City Lines, and BR operated to that specification.

The relationship produced the Class 507 and 508 EMU fleets of 1978–1980 in PTE-specified yellow-and-white livery, known on Merseyside as 'Merseyrail' from the network's branding. The Liverpool Loop (1977) and Link (1978) underground city-centre tunnels created the modern Merseyrail network. After privatisation services passed to the Merseyrail Electrics franchise (today operated by Serco-Abellio).