Trevor Day - Trevor has been calling since 1980 and is the club caller for Lune Valley Ocean Wavers at Caton, near Lancaster, England. He is an accredited caller member of the Square Dance Callers Club of Great Britain, on whose Council he has served since 2002. He is currently the Membership Officer. He is active within the Northern Area Regional Callers Assembly and has been Training coordinator and Chairman of N.A.R.C.A. for more than ten years.

He joined CALLERLAB, the "International Association of Square Dance Callers" at the 1994 UK Minilab convention and has attended every annual convention in the USA since 1997.  He is an active CALLERLAB member and is serving on the Mainstream, Plus, Choreographic Applications, Definitions and Overseas Advisory Committees. At present, he is the Vice Chairman of the Overseas Advisory Committee for the United Kingdom.

He joined ECTA, the European Caller Teacher Association, in 2006.

Trevor and his wife, Chris, have participated in all the GSI caller schools in Europe since 2003 and were on the organizing Team for the 2007 and 2009 GSI caller schools and Festivals as well as the current 2014 GSI caller and cuer school and Festival.

Trevor was one of the Staff Callers at the GSI UK 2007 and 2009 Festivals.