Cosby has dealt for more than 25 years specialising in 18th and 19th century English and French furniture. He previously traded in Greatham, Petersfield and Petworth.
As well as painting, Howard trades in furniture from around the world, antique and contemporary, with a particular interest in painted and upholstered furniture from Europe.
The collective is owned by Katie and Travers Nettleton and features more than 20 dealerships.