After completing his HND in Modern Fretted Guitar Making at the London College of Furniture Martin began hand-crafting fine custom basses going by the name of Sei Bass. In 1993 Martin decided to open up his own bass shop, The Gallery, filling a gap in the market, with a combination of bespoke custom basses and products as well as more traditional lines. In the 'in house' workshop of The Gallery, martin has since built over 450 custom instruments.
John Chapman joined the Gallery in 2001 and has learned all aspects of instrument construction and repair. John is an experienced guitarist specialising in electric and acoustic instruments. In addition to crafting JChapman Guitars John, along side Martin is responsible for instrument setup and repair.