I'm ... amazed ....
Jacobs Consultancy report, dated November 2004, page 34 recommends that trains from Westbury to Swindon at 09:30, 11:30, 13:30 and 18:30, with return trips at 10:35, 12:35, 14:35 and 19:35 be provided IN ADDITION to the peak hour service.
The MOIRA results indicate an overall revenue gain of £43k per annum, (£43k increases and no decreases), with only one significant individual revenue flow gain: Melksham – Swindon (£11k). This option is recommended for inclusion in the timetable specification.
Other options - retiming the evening train from Swindon earlier (16:38 from Swindon) or later (18:38 from Swindon) were REJECTED, and rightly so. So how come we have ended up with the second of these options being ACCEPTED. It appears that the SRA commissioned an expert's report and then decided it knew better ....
at the cost of a sensible service between Swindon and WestburyThe reports at
http://www.dft.gov.uk/stellent/groups/dft_foi/documents/divisionhomepage/612533.hcspcontain a great deal of other information about what was going on 2 years ago ... some very interesting information on Bristol to Oxford, on the Severn Beach service and other services in the Bristol area, and (on some documents) other parts of the GW franchise too.