Geraint John, Dip. Arch. (UCL), RIBA, Companion CIMPSA, FRSA, has a deep involvement in buildings for sport and leisure. His previous experience as the chief architect and head of the Technical Unit for Sport at the GB Sports Council has made him an expert in the particular field of sports facilities. He is a joint author of Stadia: The Populous Design and Development Guide, now in its fifth edition, and has curated exhibitions at the Olympic Museum in Lausanne.

In 2014, the International Olympic Committee awarded Geraint the Pierre de Coubertin Medal for outstanding services to the Olympic movement. He is the only British subject to be so honoured.

He is a senior advisor to Populous, a global architecture and design firm.

Geraint is a Visiting Professor at the University of Hertfordshire. He sat on the Environment Committee of the London bid for the 2012 Olympics and on the government`s Global Sports Projects Sector Advisory Group.

He is Honorary Life President of the International Union of Architects' Sports and Leisure Group, and an inaugural member of the International Association of Sports Facilities Hall of Fame.

Dave Parker B.Sc., CEng., FICE, was technical editor of New Civil Engineer magazine for 14 years before leaving in May 2006 to become a freelance author and journalist. New Civil Engineer is published by Emap under licence from the Institution of Civil Engineers, and goes monthly to all members of the ICE.

Prior to becoming a journalist 30 years ago, Dave was a practising civil engineer for more than 25 years. He worked in both design and contracting, was senior partner of a small forensic engineering practice, and technical marketing director of a specialist products company.

Dave is also a former Visiting Professor of Civil Engineering at the Queen's University of Belfast, a position he held for ten years.

In 2014 Dave was asked to return to New Civil Engineer as technical editor emeritus.