Train operator First Great Western will again operate an amended service tomorrow due to the cold snap.

FGW said the aim was "to ensure we can run a scheduled service whilst allowing for operating difficulties caused by the significant snowfall".

The majority of FGW services will run, with full timetables planned between Oxford, Reading and London Paddington, on the Cotswold Line between Oxford and Worcester, and on Cherwell Valley stopping services between Oxford and Banbury.

However, the Oxford-Islip-Bicester Town branch service will again be suspended all day and the service between Didcot Parkway, Swindon, Bristol Parkway and South Wales will again be reduced, due to the cancellation of a number of services between London and Cardiff.

Didcot commuters will again have a reduced service to London in the morning, with the 7.19am and 7.28am departures both cancelled.

A shuttle service will run on the Henley-Twyford branch line. Through trains between Henley and London will not run.

Chiltern Railways aims to run a near-normal service from Banbury, Kings Sutton, Bicester North and Haddenham & Thame Parkway stations but says there may well be short-notice delays and cancellations due to the extreme weather.

Chiltern's sister firm Wrexham & Shropshire plans to run its normal four trains each way linking Banbury with London, the West Midlands and North-east Wales.

CrossCountry, which links Oxford and Banbury with the South Coast, the West Midlands and the North, is also planning a near-normal service.

All train operators are advising passengers to check whether their train is running before setting out to stations, due to the risk of further disruption caused by the sub-zero temperatures expected overnight. Call National Rail Inquiries on 08457 484950, see the National Rail website, or see the relevant operator's websites.

Oxfordshire's bus operators are also advising passengers to check whether their route is operating tomorrow, due to the difficult road conditions and forecast of ice in the morning.

Tonight, the Stagecoach Oxfordshire routes running were: 1, 3, 7C, though this was unable to serve Barton, with buses turning at the Green Road roundabout at Headington, 7A/B, 10, 14, X30, 31, S2 between Witney (Thorney Leys) and Oxford only, the Oxford Tube and X5, though this was unable to run via Bure Park in Bicester. In the north of the county only two Banbury town services were running, B5, only serving Woodgreen Ave, and B8, only serving Ruscote Ave.

Oxford Bus Company services operating this evening were: 2, 4 - but not serving Elms Rise, Dean Court or Sandleigh Road, 5, 6 - but this is turning back at the Wolvercote roundabout and is not serving Wolvercote village, 8, but bypassing Barton, 9, 13 - but not serving Northway, 15, 35 - but not serving Kennington and Radley, X2, but terminating at Didcot Parkway station, not Broadway, X3/X13 - but not serving Northway, park-and-ride routes 300, 400 and 500, BrookesBus U1, but not serving Harcourt Hill and Wheatley campuses or Wheatley village, U5. The X90 Oxford Espress and X70 and X80 airline services are running but with delays of about 15 minutes.

Thames Travel plans to operate buses from 6.55am tomorrow on the following routes: X32, X39, X40, 32, 101, 105/106 and 130. Passengers are advised to call the firm on 01491 837988 from 6am to check if services will run.

RH Transport ran a limited service on the 600, 700 and 800 Oxford hospitals park-and-ride service today but other routes were suspended. Passengers should call 01993 869100 for details of services in the morning.