Colvin became the youngest player to represent England in a Test match, at 15, when selected to face Australia in the first Test at Hove in August 2005.
She was drafted in as England went for an extra spinner on a pitch expected to turn and she made an immediate impact, taking three wickets in Australia's first innings, as the hosts went on to win the Ashes for the first time in 42 years.
A member of the Sussex academy, headed by Keith Greenfield, Colvin played under-15 and first XI boys cricket for Brighton College in national competitions.
She then featured for Brighton and Hove plus Sussex, and helped the county win the 2005 Women's County Championship.
Colvin was named female pupil of the year in The Daily Telegraph/Norwich Union 'school sport matters’ national award winners for 2006.
She helped England to World Cup and World Twenty20 glory in 2009 and that summer became the number-one bowler in the ICC one-day women's rankings.
In November she won the UK Sport young sportswoman of the year at the Sunday Times sportswomen of the year awards.
Colvin reached 50 ODIs in July 2010 and, after missing the trip Sri Lanka to concentrate on her university studies, returned for the tour of Australia on which England lost the Ashes.
Following a full 2011 summer with England, she prioritised her degree that winter. She returned to international action in the summer of 2012 and then helped England finish runners-up at the World T20 in Sri Lanka with miserly bowling, including with 4-9 versus Pakistan.