On 28 March 2014 it was reported that she had been arrested on suspicion of driving while under the influence of alcohol in her home town of Knutsford, Cheshire. On 4 April Knox was formally charged, and she appeared at Macclesfield Magistrates' Court on 24 April. On 23 January 2015 she changed her plea to guilty. She was banned from driving for a year, as well as being fined £3,000 and £1,750 in costs.