I also draw your attention to a quote by me in response to Insider :
I do , however , think that FGW▸ 's decision to ask for a change to the Westbury - Swindon section of the SLC▸ (granted by the DfT» ) , in order to allow them to please Stroud Valley commuters (who already had an hourly service) at the expense of Melksham / TransWilts commuters (who had virtually no service) , while saving themselves having to use an extra unit , was not their finest hour and has earned them the mistrust of quite a few people on the ground.
Indeed - that action
by First Great Western was the pits. The specification from the DfT was dreadful enough was designed to provide a decent commuter trip into Swindon - 08:15 in, 17:45 out, but FGW extended that by 90 minutes (getting the DfT to modify the spec in the process) and making the day impractically long.
I know people who gave up working because of FGW.
P.S. Then the remaining two trains get put on at silly times ... 06:18 off Swindon, back at 20:20 when the business case was much better for 08:30 off Swindon and 17:30 back ... and that would have tied in operationally with the other two trains.