All routes are listed in the
Service Level Commitments. They are currently:
Great Western Main LineA1 London Paddington ^ Reading ^ Swindon.
A2 London Paddington ^ Cardiff Central ^ Swansea.
A3 London Paddington^ Bristol Temple Meads/Weston super Mare
A4 London Paddington/Swindon - Cheltenham Spa
West of EnglandB London Paddington ^ Plymouth / Penzance
Thames Valley InnerC1▸ London Paddington ^ Reading
C2 London Paddington ^ Hayes & Harlington (applies throughout)
C3 London Paddington ^ Greenford / Hayes & Harlington (dated)
C4 Slough ^ Windsor & Eton Central
C5 Maidenhead ^ Marlow
C6 Twyford ^ Henley-on-Thames
Thames Valley OuterD1 London Paddington ^ Oxford (Fast services)
D2 Reading ^ Oxford
D3 Not used
D4 Oxford ^ Banbury
D5 Oxford ^ Worcester Foregate Street - Hereford
D6 London Paddington ^ Reading ^ Newbury ^ Bedwyn
D7 Reading ^ Basingstoke
North DownsE Reading ^ Redhill / Gatwick Airport
Regional InterurbanF1 Cardiff Central ^ Portsmouth Harbour
F2a Cardiff Central ^ Bristol Temple Meads
F2b Bristol Temple Meads ^ Westbury
F3 Westbury ^ Southampton Central
F4 Westbury ^ Weymouth
F5 Westbury ^ Swindon
F6 Southampton Central ^ Brighton
BristolG1a Bristol Temple Meads ^ Taunton ^ Exeter St David^s
G1b Bristol Temple Meads ^ Weston super Mare
G1c Filton Abbey Wood ^ Bristol Temple Meads
G2 Bristol Temple Meads ^ Severn Beach
G3 Bristol Temple Meads ^ Cheltenham Spa - Great Malvern
Devon and CornwallH1 Exeter St David^s ^ Plymouth
H1a Exeter St David^s ^ Plymouth
H2 Plymouth ^ Penzance
H3 Exeter St David^s ^ Exmouth
H4 Exeter St David^s ^ Paignton
H4a Exeter St David^s ^ Paignton
H5 Exeter St David^s ^ Barnstaple
H6 Exeter Central ^ Crediton
H7 Plymouth ^ Gunnislake
H8 Liskeard ^ Looe
H9 Par ^ Newquay
H10 Truro ^ Falmouth Docks
H11 St Erth ^ St Ives
Every one of those has a maximum journey time. Any significant time added to an intermediate journey on any of those routes would have a knock on effect for the end to end journey. That would likely see the tightly specified maximum journey time exceeded.
Again, I say it is neither possible, or in their interests, for
GWR▸ to arbitrarily extend journey times to reduce their delay compensation payments.