The recent discovery of an art forger's workshop reminds us of the long history of fraudulent artworks – here are the simple rules to work them out.

Let me take you back in time. It is the 1960s in Glasgow. A group of men stand around a roaring fire surrounded by a huge oak fireplace designed by Charles Rennie Mackintosh at the end of the 19th ...

By this time the great writer on art John Ruskin had begun championing Millais’ work, and it was while staying with Ruskin in Scotland in 1853 that Millais and Ruskin’s wife Effie Gray fell in love.