With the first units entering service for Thameslink in 1988, Class 319s were a mainstay on the Thameslink network for almost three decades.
In early 2015, the first batch of units were withdrawn from the network after being displaced by Class 387 units.

Twenty Class 319/3s transferred to Northern Rail for newly electrified lines in the North West, with the first units entering service in March 2015 after a light refurbishment.
A further seven units left the network in 2015, transferring to London Midland to replace their Class 321 units, which had transferred to Abellio ScotRail.

Since the introduction of the new Class 700 units in June 2016, Class 319s departed the network as new trains have entered service.
A further batch of twelve units transferred to the North West of England for service with Arriva Rail North, with the remainder being placed into storage at Long Marston.
The six remaining Class 319 units were withdrawn from Thameslink service on 27 August 2017, around 30 years after their initial introduction to service.

Since their withdrawal, a number of additional units have been allocated to Northern and West Midlands Trains to boost capacity.
With the first units entering service for Thameslink in 1988, Class 319s were a mainstay on the Thameslink network for almost three decades. In early 2015, the first batch of units were withdrawn from the network after being displaced by Class 387 units.
Twenty Class 319/3s transferred to Northern Rail for newly electrified lines in the North West, with the first units entering service in March 2015 after a light refurbishment. A further seven units left the network in 2015, transferring to London Midland to replace their Class 321 units, which had transferred to Abellio ScotRail.
Since the introduction of the new Class 700 units in June 2016, Class 319s departed the network as new trains have entered service. A further batch of twelve units transferred to the North West of England for service with Arriva Rail North, with the remainder being placed into storage at Long Marston. The six remaining Class 319 units were withdrawn from Thameslink service on 27 August 2017, around 30 years after their initial introduction to service.
Since their withdrawal, a number of additional units have been allocated to Northern and West Midlands Trains to boost capacity.
British Rail Class 319