Won't waste space quoting people:
1. Yes, the quoted timing is optimistic, to put it politely, but makes it look a better comparison with the
FGW▸ time via Reading. I'd say 75 minutes is more realistic.
2. Extra trains. A number of services throughout the day turn round at Bicester North already, so their paths can be used.
3. You would need a hell of a lot more than ^200m to reopen the line via Thame to Cowley. The stub out to Thame closed in 1991 under
BR▸ and the track was later removed. Video of the last train of oil tanker empties out is at
http://www.youtube.com/watch?v=Npj1tNHhDEk Apart from the M40, parts of the trackbed are missing elsewhere. See
http://disused-rlys.fotopic.net/c883855.html for photos taken along the route a couple of years ago.
The Morris Cowley branch is pretty busy with BMW traffic, parts in and cars out, so would need redoubling to handle any extra traffic.
4. Orcats raiding. Since this would be a new service, then all operators involved would have to sit down round a table and thrash it out. Chiltern couldn't just say 'we run to London now, give us a pile of money please'.
5. I'm dubious that this will actually happen unless the East-West Link from Oxford-Bletchley/Milton Keynes is approved, because I don't believe Chiltern would go it alone on the redoubling between Oxford and Bicester Town.
Some valid points there. Though the pathing issue is more complex than utilising existing paths on the Marylebone to Bicester North services. If you take the 'up' service for example there is only one train starting at Bicester heading towards Marylebone before 9am and those after that that do (an average of about 1tph, but it's a bit hap-hazard) take around 70 minutes with their 5 or six stops which would bump the journey time from Oxford to Marylebone to nearer 85 minutes which really wouldn't be attractive.
It would take some VERY careful planning to try and slot in more fast trains which wouldn't impact on the number of services serving the smaller stations. In the peak hours I could only see it being possible (even if extra passing loops are provided) with the replacement of the Aylesbury<>Marylebone via High Wycombe services with Aylesbury<>Princes Risborough shuttles as per the current off-peak. I wouldn't advise the member of OxRailAction to get too optimistic about this service!
As for the Thame route, wasn't it part of Chiltern Railways' franchise commitments to at least look seriously into re-opening the Thame route? Other potential projects are:
* The restoration of the quadruple track between South Ruislip (Northolt Junction) and West Ruislip, allowing trains to call at both stations without blocking the line.
* Triple track currently exists at West Ruislip, with the up platform loop still in situ, and at South Ruislip, with the Down Main through line also in situ. This would involve the reconstruction of the down platform at West Ruislip, the reconstruction of the up platform at South Ruislip, and the demolition of West Ruislip signalbox. This 'Chiltern Metro' service was not programmed in to the last round of franchising agreements.
* Restoration of fast through lines at Beaconsfield. This project has been shelved; the existing lines have been realigned and can now be traversed by locomotive-hauled trains at 50 miles an hour, and by the Chiltern
DMUs▸ at 75 miles an hour.
* Double track the line from Princes Risborough to Aylesbury.
* Remodelling Banbury Station and tracks.
* Building of the West Hampstead Interchange to allow easy interchange with the Silverlink Metro, Jubilee Line, Metropolitan Line and First Capital Connect service. This would also give Chiltern Railways an interchange with the future Orbirail line.
* New Chiltern Metro Service that would operate 4+tph for Wembley Stadium, Sudbury & Harrow Road, Sudbury Hill Harrow, Northolt Park, South Ruislip and West Ruislip. This would require a reversing facility at West Ruislip, passing loops at Sudbury Hill Harrow and a passing loop at Wembley Stadium (part of the old down fast line is in use as a central reversing siding, for stock movements and additionally for 8-car football shuttles to convey passengers to the stadium for events).
* Re-opening the line between Oxford and Princes Risborough, which would provide an alternative to the Oxford Paddington route. The Oxford to Banbury spur would then be handed over to the Chiltern Main Line to create a diversionary loop from Princes Risborough to Banbury via Oxford. This option requires an expensive crossing of the M40 motorway.
* Building a connection at Bicester to the Oxford to Bicester Line, allowing direct trains from Marylebone to Oxford via Bicester Town.
* Re-opening the passenger line between Aylesbury and Bedford via Milton Keynes.
* A new station is currently being constructed at Aylesbury Vale to serve a planned residential development in the area. This station will also improve access from those parts of Buckinghamshire not at present directly served by the rail network.
* Opening a rail line from Aylesbury to a M6-M1 Parkway Station near Rugby.
* Re-opening the Oxford to Bedford line. This would form part of a future Varsity Line.
* Re open Gerrards Cross to Uxbridge line continuing the route to Heathrow Airport. This would give Birmingham a direct rail link with the largest airport in the United Kingdom.