Blue Monday, January 16, is billed as the grimmest day of the year, but in 2017 you can cheer yourself up with lunch for just 99pence at any branch of Busaba Eathai.

The special offer covers a choice of nine dishes – including several with chilli, which releases happiness-inducing hormones into your body.

Founded by Alan Yau in 1999, the Busaba chain offers “reliable” Thai canteen meals, according to the Harden’s Survey. There are now 12 branches in London, with offshoots in Manchester, Liverpool and St Albans.

The 99p offer is available on a first-come-first-served basis through the Busaba website, for meals between 12 noon and 4pm. In addition, 25% will be knocked off all food bills from Sunday to Thursday throughout January.