Marcus Agius is the former group chairman of Barclays. In July 2012, he announced his resignation over the LIBOR rate-rigging scandal and was later replaced by Sir David Walker. Despite being retired Agius attended the high powered Bilderberg conference held in Hertfordshire, UK in June 2013, along with David Wright vice chairman of Barclays. . He also attended the 2014 Bilderberg conference in Copenhagen.
- Barclays - Former group chairman
- BBC - Non-executive board director, left this position in November 2012 when his term expired.
- Bilderberg - Steering committee member
- British Bankers Association - UK banking lobby group that is also responsible for setting LIBOR - Agius was chairman until he tendered his resignation on 2 July 2012 in the wake of the LIBOR fixing scandal. 
- Josephine Moulds, Marcus Agius: old-fashioned banker who was proud of Barclays' culture, guardian.co.uk, 2 July 2012.
- Marcus Agius, About Us, Barclays, accessed 13 May 2010.
- Jill Treanor, Barclays chairman Marcus Agius resigns over rate-rigging scandal, guardian.co.uk, 2 July 2012
- Bankers who always attend Bilderberg meetings Business Insider
- governance, bilderbergmeetings.org, accessed 2 July 2012.
- Marcus Agius tenders resignation as BBA chairman, Telegraph, 2 July 2012