According to the Evening Standard, Shawcross "So impressed columnist Danny Finkelstein after a talk he gave at her school that he introduced her to Osborne in 2007 when she was working at Boston Consulting Group.
Joshua Neicho goes on to describe her as 'formidably well-connected':
While working as a management consultant with Boston Consulting, Shawcross was seconded to work for Boris Johnson during his 2008 mayoral election campaign, holding responsibility for writing large parts of his manifesto.
Her particular interest is in financial services and business growth: in opposition, she worked with Lord Sassoon (now a Treasury minister) to develop financial services policy and to cost Conservative policy options. 
Contact, Resources, Notes
- Department of Information Services, "Parliamentary Information List", accessed 07.09.10
- MWW UK Government Chart July 2015, accessed 8 July 2015.
- Josh Neicho, "All power to the new Tories", London Evening Standard, 26.07.10, accessed 07.09.10
- Louise Armistead, "George Osborne's Treasury team - the power behind the coalition government", The Telegraph, 13.05.10, accessed 07.09.10
- Yasmine Chinwala and Angela Henshall, additional research by Eric van Den Berg, FN100 Rising Stars 2010: the profiles, Financial News, 19 November 2012.
- The coalition special advisers, Civil Service World, (the newspaper for the senior civil service) 7th April 2011, accessed 5 October 2011
- Next’s Lord Wolfson ties the knot, Retail Week, 28 June 2012.
- Laura Pitel, Royal biographer in line to head Charity Commission; William Shawcross nominated by Cabinet Office, The Times, 30 August 2012.