Units 319021-060 were refurbished for Thameslink at Railcare Wolverton from 1997-98.
Work included the installation of a first-class compartment at one end, in the DTSO(A) vehicle and the removal of some seating in the centre of each vehicle to give 2+2 layout.
Cosmetic improvements included new carpets and seat coverings, as well as application of the navy-blue Thameslink livery.

Upon completion, these units were renumbered as 319421-460 and moved on to the Bedford to Brighton service, branded as 'Thameslink Cityflier'.

From 2003 to 2005, during the Thameslink blockade, some minor interior updating took place such as recovering seats with an updated Thameslink moquette.
First-class compartments were refurbished with new carpet, retrimmed seats and chrome-plated heater panels, apart from unit 319444, which retained its 1997-designed interior.

A later refresh was unveiled by the then new operator First Capital Connect on 26 October 2006.
Unit 319425 was renamed Transforming Travel for the occasion and showcased the following improvements:
Emergency brake pressure increased to the +12% G standard, giving an extra 1 Bar brake cylinder pressure in emergency
Emergency brake 'timeout' period reduced from 2 minutes to 20 seconds
DC traction motors rewound to improve reliability
Improved motor control hardware with a new Remote Communications Frame
New 'easy to clean' flooring
Retrimmed seats into the First Capital Connect moquette
Some seats in standard class were removed and vertical luggage stacks installed in their place; a further two seats were removed in the TSO vehicle to allow easier access to the toilet
Repainted dado side panels and wall ends
Existing stanchions painted pink
New stanchions leading from some seats to the overhead luggage rack to provide standing passengers with something to hold on to and more support
Improved, brighter fluorescent lighting diffusers
The refresh took place at Railcare Wolverton works and also featured both a mechanical overhaul (under the solebar) and a full exterior relivery, again in vinyl.
Some Class 319/4 units have had their Stone Faiveley AMBR air and spring pantograph replaced by the more modern Brecknell Willis High Speed air-only pantograph design.
Units 319021-060 were refurbished for Thameslink at Railcare Wolverton from 1997-98. Work included the installation of a first-class compartment at one end, in the DTSO(A) vehicle and the removal of some seating in the centre of each vehicle to give 2+2 layout. Cosmetic improvements included new carpets and seat coverings, as well as application of the navy-blue Thameslink livery.
Upon completion, these units were renumbered as 319421-460 and moved on to the Bedford to Brighton service, branded as 'Thameslink Cityflier'.
From 2003 to 2005, during the Thameslink blockade, some minor interior updating took place such as recovering seats with an updated Thameslink moquette. First-class compartments were refurbished with new carpet, retrimmed seats and chrome-plated heater panels, apart from unit 319444, which retained its 1997-designed interior.
A later refresh was unveiled by the then new operator First Capital Connect on 26 October 2006. Unit 319425 was renamed Transforming Travel for the occasion and showcased the following improvements:
Emergency brake pressure increased to the +12% G standard, giving an extra 1 Bar brake cylinder pressure in emergency
Emergency brake 'timeout' period reduced from 2 minutes to 20 seconds
DC traction motors rewound to improve reliability
Improved motor control hardware with a new Remote Communications Frame
New 'easy to clean' flooring
Retrimmed seats into the First Capital Connect moquette
Some seats in standard class were removed and vertical luggage stacks installed in their place; a further two seats were removed in the TSO vehicle to allow easier access to the toilet
Repainted dado side panels and wall ends
Existing stanchions painted pink
New stanchions leading from some seats to the overhead luggage rack to provide standing passengers with something to hold on to and more support
Improved, brighter fluorescent lighting diffusers
The refresh took place at Railcare Wolverton works and also featured both a mechanical overhaul (under the solebar) and a full exterior relivery, again in vinyl. Some Class 319/4 units have had their Stone Faiveley AMBR air and spring pantograph replaced by the more modern Brecknell Willis High Speed air-only pantograph design.
British Rail Class 319