At the two-starred Square in Bruton Street, Mayfair, £30 buys two lunch courses with another course at £5. Chez Bruce, in Wandsworth Common, charges £25 for a three-course lunch or £40 for dinner. Co-owner Bruce Pool said: "I'd rather charge as little as I can and have a fuller restaurant with happy customers. A lot of restaurants used to think they could charge what they want and get away with it. But people's needs and tastes are changing."