|Competitor for Great Britain|
|Bronze||2013 Moscow||4x100 m relay|
Lewis is a member of Kingston upon Hull A.C. (KUHAC) and is coached by Rana Reider. She was previously coached by Roger Walters, who died in 2013. In 2012, Lewis improved her three-year old 100 metres PB from 11.73 to 11.51, to rank in the UK top ten for the first time.
Lewis's breakthrough year was 2013. During the indoor season, she improved her 60 metres best to 7.31 secs in January, before running 7.32 to finish second at the British Indoor Championships in February. She ended the indoor season ranked third in the UK. Outdoors, she improved her 100 metres best from 11.51 to 11.36, in the heats of the British Championships. She went on to finish second in the final in 11.43. These performances earned her relay selection for the World Championships.
At the 2013 World Championships in Moscow, the British 4x100 m relay quartet of Dina Asher-Smith, Ashleigh Nelson, Lewis and Hayley Jones, ran 42.75 to reach the final. In the final, they ran 42.87 to originally finish fourth, but were promoted to the bronze medal after the disqualification of the French squad.
|Event||Personal Best||UK ranking|
|60m||7.31 secs||3rd in 2013|
|100m||11.36 secs||5th in 2013|
|200m||23.90 secs||20th in 2012|
|400m||58.1 secs||30th in 2006 (U20)|
- "Sprint coach Roger Walters loses battle with cancer". Athletics Weekly. 12 August 2013. Retrieved 23 March 2014.
- "2012 women 100m". Power of 10. Retrieved 23 March 2014.
- "2013 women 60m". Power of 10. Retrieved 23 March 2014.
- "GB win two bronze medals". BBC Sport. 17 August 2013. Retrieved 23 March 2014.