Michelin upgraded two restaurants to two-star status in the 2014 Britain and Ireland dining guide: Dinner by Heston Blumenthal and the Greenhouse, both in London.

There are 15 new one-star restaurants, including Lima, Angler, Outlaw’s at the Capital, HKK, Bo London, Social Eating House, Story, Ametsa and Brasserie Chavot, all in London. L’Atelier de Joel Robuchon loses its second star.

“London, in particular, has never offered so much choice,” Rebecca Burr, the guide’s editor, said today in an e-mailed release. “With cuisines and culinary influences from all parts of the globe, it’s no surprise that the capital is one of the most exciting cities in the world for food.”

Michelin stars are valued highly by chefs and the likely awards are discussed in kitchens across the UK before publication. Speculation this year centred on hopes for more three-star restaurants. There are only four in the UK.