From this:
https://www.eastwestrail.org.uk/wp-...entral-Section-Engineering-Summary-Report.pdf there's an assumed-for-business-case service pattern.
74. For Business Case appraisal purposes, a common set of ‘Do Something’ passenger services as well as a single freight service per hour was assumed for all corridor options as shown here:
- 1 train per hour (tph) London Paddington – Oxford – Cambridge semi-fast (an extension of the ‘Do-Minimum’ London Paddington – Bedford service;
- 1 tph Bletchley – Cambridge semi-fast; and
- 1 tph Bristol – Cambridge, with alternate trains extended to Norwich or Ipswich.
75. Each ‘Do Something’ scenario was built upon a common ‘Do Minimum’ scenario that included the following passenger services as well as a single freight service per hour:
- Thameslink December 2018 specimen timetable
- IEP specimen Timetable on the ECML
- Chiltern Evergreen 3
- East West Rail Western Section (EWR WS):
- 1 tph Paddington – Oxford – Milton Keynes
- 1 tph Paddington – Oxford – Bedford
- 1 tph Marylebone – Milton Keynes
- 1 tph Bournemouth – Manchester diverted via EWR WS and West Coast Main Line (with backfilling between Oxford and Birmingham and between Birmingham and Manchester)
76. The ‘Do Minimum’ assumes that there is a new station at Addenbrookes and that all EWR services would call there.
Semi-fast trains would be 100mph and would give a 79 minute Oxbridge journey time if it goes via Bedford Parkway or Bedford St Johns, and 89 minutes if goes via Bedford Midland.
They look at removing the Bletchley - Cambridge 'shuttle', and also extending it to Milton Keynes, but then don't say what they find from that. They also find that the regional trains make reasonable money, but the stopping one doesn't quite break-even, and so a more optimal service pattern would need to be found.
They also talk, in this document, about Birmingham/Manchester - Cambridge via E-W Rail being a good idea. However due to "the capacity charge on the WCML" the costs of doing them would outweigh the benefits (especially Manchester) until HS2.
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However, a consultation on the Central section is upcoming, which means a purge of detail on it in prep for new details.