There’s one Banksy mural that stands out when you visit Bristol, home town of the guerrilla artist who has become an art-world phenomenon. The title of the piece is The Mild Mild West and it depicts a huge, smiling teddy bear with a Molotov cocktail in his paw, facing three policemen holding up riot shields. [...]

Eight years ago a hard-up student spent the last £300 of his student loan on a piece of art. Next week it will be displayed in a commercial art gallery with a price tag of £150,000. The work in question, Riot Green, is one of more than 60 pieces by Banksy to go on show [...]