Performance Consultants International
On their web site they note: "Performance Consultants is the leading coaching, leadership and performance improvement firm in the workplace globally."  They were founded back in 1989 by 3 established elite performers in their own right: 
- David Whitaker MBE – coach for the Great Britain men’s hockey team who won the Olympic Gold in Seoul in 1988.
- David Hemery MBE – Olympic 400m Gold Medalist.
- Sir John Whitmore – Le Mans racing driver
In October 2008 it was reported that "Performance Consultants, whose clients include British Airways, Ernst & Young, John Lewis Partnership, Lloyds TSB, Rolls Royce and Procter & Gamble, has taken an office in the City of London, introduced a new corporate identity, and a new website, and made key changes to its management team.
"As part of its new focus, the firm will provide coaching for individuals, teams and groups; coach education programmes for new and experienced coaches, including its university-accredited qualification programmes in Coaching & Organisational Development; consultancy and bespoke development programmes on issues such as leadership, teamwork, coaching and emotional intelligence.
"David Whitaker has become Chairman of the firm; Jez Cartwright has been appointed as Chief Executive Officer; Neil Twogood has become Chief Operating Officer; Alan Ward has become Director of Coach Education and Sue Slocombe has become a Director." 
Accessed June 2013: 
- Jez Cartwright - Chief Executive
- Mark O'Connell - Managing Director
- Alan P. Ward - Partner
- Steve Knight - Partner
- Neela Bettridge - Partner
- Ian Paterson - Partner
- Peter Cordery - Partner
Accessed December 2013: 
Resources and articles
- Performance Consultants International About, organizational web page, accessed February 29, 2012.
- Performance Consultants Our Philosophy, organizational web page, accessed June 15, 2013.
- personneltoday Coaching firm relaunches with new team, organizational web page, accessed June 15, 2013.
- Performance Consultants Team, organizational web page, accessed June 15, 2013.
- Performance Consultants Advisory Board, organizational web page, accessed December 27, 2013.