The BR coaches now seem to be:
BR, Mk4 Standard, Coach A, - R40191
BR, Mk4 Standard, Coach C - R40156A
BR, Mk4 Standard, Coach D - R40156B
BR, Mk4 Standard, Coach E - R40156
BR, Mk4 Standard (accessible toilet), Coach F - R40159
BR, Mk4 Restaurant First, Coach G, - R40160
BR, Mk4 Open First, Coach H, - R40152
BR, Mk4 Open First, Coach K, - R40154
BR, Mk4 DVT - R40161