Leg injury may rule out Owen Farrell

England face the prospect of entering their Calcutta Cup clash against Scotland without Owen Farrell after concerns over his fitness escalated on the eve of the Twickenham showdown.

Farrell was unable to take part in the captain’s run yesterday due to the unspecified leg injury sustained in training 24 hours earlier and he now faces a race against time to prove he can take part in the Triple Crown decider.

The Saracens playmaker, due to start at inside centre, faces a period of intensive rehabilitation in his quest to be ready, with England prepared to make a late call.