Some of the splashiest Sotheby’s London sales have included Banksy’s Girl with Balloon, which began to pass through a shredder hidden in the frame as soon as it had been sold; and Gustav Klimt’s Lady with a Fan, which fetched more than £85 million. For those not bidding, the lobby restaurant is a charming spot for lunch, with diners discussing deals over Caesar salads and beetroot-cured salmon.




