Visitors who arrive in London via Heathrow Airport will pass the Hogarth roundabout in Chiswick as they approach the city along the A4 from the west. They may see the house in which William Hogarth (1697 – 1764) lived, which is now a museum. Their Blue Badge Tourist Guide may even tell them that it is believed that Hogarth’s habit of sketching people’s faces on his thumbnail gave us the phrase ‘a thumbnail sketch.’

London’s Blue Badge Tourist Guides often take their groups around the city's art galleries and are trained to be familiar with the works of major painters. One of these is Vincent van Gogh. Many of us know a few famous facts about the Dutch post-Impressionist -- he only sold one painting during his life; he cut off his ear and later committed suicide. Brilliant artist, unstable person is the general view of Vincent van Gogh.