Dreweatts 1759 buys struggling Mallett for £100,000 from Stanley Gibbons

London and New York antiques dealership will now form new private sales division of UK auctioneer Dreweatts, based in Berkshire and Pall Mall

What's onarchive

What's on in London: Glass extravagance at Mallett's and Richard Green’s cabinet of Dutch delights

Also on show are Ewan Uglow’s precise drawings at Browse and Darby and the diverse talents of Underwood at the Redfern Gallery