A number of roads were reported to be closed tonight.

Oxfordshire County Council said Hanney Road, Steventon was reported as impassable.

The Northern Bypass in Oxford was closed close to the Green Road roundabout. and highways teams were working to re-open the route.

The Marston slip roads off the Northern Bypass were also closed.

Police tonight called on drivers not to travel in Oxfordshire unless essential.

A spokesman for Thames Valley Police said: "Most importantly, do not travel unless it is absolutely essential you do so.

"If you decide you must travel, remember to ensure your car is fully fuelled and that you have packed warm clothes, blankets, food and drink, and your mobile phone and in-car phone charger to allow you to communicate with your friends and relatives if you do get stuck.

"If you do decide to travel and subsequently find yourself stuck in a position whereby the highway obstruction prevents emergency services and gritting vehicles access, your vehicle may be recovered by either the Highways Agency or Thames Valley Police and there will be a cost implication.

"Emergency calls for police, fire and ambulance services should be made in genuine emergency situations only. If you feel unwell, make use of NHS Direct. Only call an ambulance if advised to do so.

"The last snowfall two weeks ago also brought some power disruption. In the event of losing supplies, please have access to torches rather than candles to prevent the risk of fire and consider the welfare of your neighbours – some of whom may be elderly or vulnerable."

If you need to contact Thames Valley Police for specific advice call 0845 8 505 505 or contact your local authority.