McAllister is a former pupil of Ysgol Glyndwr and Bryntirion Comprehensive School in Bridgend. She is a graduate of the London School of Economics, where she completed a BSc. Honours degree in Government, and at Cardiff University, where she completed a PhD in Politics. She was Professor of Governance at the University of Liverpool Management School between 1998 and October 2016. She is a member of the Learned Society of Wales and a Fellow of the Royal Society of the Arts. She was a member of the National Assembly for Wales Remuneration Board from 2014 to 2015, an advisor to the Independent Panel on Assembly Members' Pay and Support from 2008 to 2009, and a member of the Richard Commission between 2002 and 2004. She advised the Independent Panel on AMs' Pay and Support, 2008–10 and was Chair of the Expert Panel on Assembly Electoral Reform which published its report "A Parliament that Works for Wales" in December 2017. She holds honorary degrees and fellowships from Bangor University, Cardiff University, Cardiff Metropolitan University, Swansea University, and Trinity St David's University.
Club career
McAllister was a club athlete and played netball and hockey. She did not play organised football until she joined Millwall Lionesses while studying at the London School of Economics. Upon her return to Wales, she spent 12 years with Cardiff City. McAllister was Club Captain and collected two Welsh Women's Cup winner's medals and won promotion into the FA Women's Premier League with Cardiff City. She is one of the club's Vice Presidents.
Professor McAllister was Chair of Sport Wales between 2010 and March 2016. In this role, she oversaw the most successful period ever for elite sport in Wales, with Wales winning a record number of medals in the Commonwealth Games 2014, the 2012 London Olympics and Paralympics and the 2016 Rio Olympics and Paralympics. She was also a Board member of UK Sport between 2010 and 2016, when Team GB broke its medal-winning records. She is currently a Director of the Football Association of Wales Trust. McAllister was nominated by the Football Association of Wales for election as UEFA's female member of the FIFA Council but was controversially prevented from standing. She is currently Deputy Chair of the UEFA Women's Football Committee and Chair of the Welsh Sports Hall of Fame.
Politics and Media
McAllister was a Plaid Cymru Parliamentary candidate in 1987 and 1992 but left the party shortly afterwards. She is currently a political commentator for the BBC and other media platforms and commentates regularly on international, network and Welsh media on Welsh politics, elections and public policy. McAllister writes a regular column on current affairs, sport and politics in the Western Mail newspaper and for Wales Online.