One Man Exhibitions of John Melvin's paintings and drawings have been held at:
The Prince of Wales's Institute of Architecture, Remembering Rome 1997.
The Brew House Gallery, Eton Eton Observed 1999
The Architectural Association, Etruscan Places 2002
St Andrews University, Etruscan Places 2003
Guildford Cathedral, Etruscan Places 2003
The Stone Gallery, Roma 2003
Blackwells Oxford, Holywell Music Room 2009