Guy Peppiatt started his working life at Dulwich Picture Gallery before joining Sotheby's British Pictures department in 1993. He soon specialised in early British drawings and watercolours and took over the running of Sotheby's Topographical sales. Topographical views whether they be of Britain or worldwide have remained an abiding interest. Guy left Sotheby's in early 2004 and now works from a ground floor gallery in Mason's Yard, St. James's.

He has a number of exhibition of early drawings and watercolours in the gallery, as well as exhibiting at fairs. He also advises clients on their collections, buys and sells on their behalf and can provide insurance valuations.