John Michael Harper

Former appointments

• The Aes Tring Park School Trust

  Director · Nov 2010 – Jul 2025

• Qinetiq Group PLC

  Director · Nov 2011 – Jul 2023

  £108m

  Profit after tax

• Ricardo Limited

  Director · Jun 2003 – Oct 2014

  £800k

  Profit after tax

• Signature Aviation Limited

  Director · Feb 2005 – May 2014

• Videndum PLC

  Director · Jun 2004 – Jun 2012

  −£68.6m

  Loss after tax

• Ingenious Film Partners 2 LLP

  LLP member · Mar 2006 – Apr 2011

• Bba Holdings Limited

  Director · Feb 2006 – Aug 2007

• Balderton Aviation Holdings Limited

  Director · Feb 2006 – Aug 2007

• Bba Overseas Holdings Limited

  Director · Feb 2006 – Aug 2007

• Umeco Limited

  Director · Jun 2002 – Jul 2007

• Kidde Limited

  Director · Sept 2000 – Apr 2005

• Baxi Group Limited

  Director · Feb 2001 – Mar 2004

• Chubb Group Limited

  Director · Nov 1999 – Nov 2000

• KNDS Defence UK Limited

  Director · Mar 1997 – Dec 1999

• CHUBB FIRE SECURITY (SA) LIMITED

  Director · Mar 1997 – Dec 1999 · Dissolved

• T G Products Limited

  Director · Apr 1995 – Dec 1999

  −£335k

  Loss after tax

• CHUBB FIRE PROTECTION UNLIMITED

  Director · Jan 1995 – Dec 1999 · Dissolved

• KIDDE FIRE PROTECTION LIMITED

  Director · Apr 1992 – Dec 1999 · Dissolved

• Detector Electronics (U.K.) Limited

  Director · Mar 1992 – Dec 1999

  £3.05m

  Profit after tax