Giles Peppiatt studied at St. Andrews University in Scotland before joining Bonhams in 1989. In 1993 he trained as an auctioneer and conducted his first sale in that year. In 1997 he qualified with the Royal Institute of Chartered Surveyors as a 'Chartered Arts & Antiques Surveyor'.
Giles established the "Exploration, Travel & Topgraphical Pictures" sales in 1997, a field in which Bonhams now leads the market. In 2007 he started the first ever London auction devoted entirely to South African artists, The South African Sale. These sales now turnover a greater value of artwork than are sold in all of South Africa and have established London as the centre for South African Art.
Continuing with his African work Giles presented the first London sale of Contemporary African Art – Africa Now in April 2009. This sale and exhibition was critically acclaimed and brought this hitherto unknown but vibrant market to the attention of many collectors and institutions.
Giles has responsibility for Orientalist Paintings and has overseen and collected the forthcoming sale Orientalist Paintings & Works of Art in Dubai in May 2009.