LNW-GW Joint
Veteran Member
The enhanced Redditch service is covered by 323s displaced by 350/2s being deployed on the Walsall-Wolves, in turn made available by the arrival of the 350/3s. Bromsgrove will require an extra diagram, assuming every Longbridge service is extended, thus an extra 2 units.
So, over the next couple of years LM will require 2 extra EMUs for Bromsgrove, 4 for Chase valley and 1 or 2 for Coventry/Nuneaton, hence 7 or 8 units. I note that Northern require 9x 323s to cover Manchester-Alderley Edge-Crewe including the Airport stoppers, whilst 7x are required to cover the Stoke and Hadfield turns.
The DfT thinks LM already has its Bromsgrove trains: https://www.gov.uk/government/news/extra-trains-and-faster-journey-times-will-boost-capacity
Of the 40 carriages London Midland will receive, 12 will help deliver an internal rolling stock cascade that will provide additional capacity on the Cross City line in Birmingham. The frequency of peak and off-peak services between Birmingham and Redditch will be increased from 2 trains per hour to 3 trains per hour from December 2014. The trains will also enable electric services from Birmingham New Street to be extended to Bromsgrove from May 2015, assuming that the plan to relocate Bromsgrove Station is confirmed and electrification is completed on schedule
To be fair, when they were introduced the DfT announcement made no mention of Bromsgrove: https://www.gov.uk/government/news/thousands-more-seats-for-london-midland-passengers