Pure, the healthy, food-to-go concept, in which Whitbread acquired a 49% stake in 2016, saw sales climb 27% to just over £15m in the year to 28 December 2017, helped by the addition of three new sites and like-for-like sales growth.

The 16-strong company said that it made a loss for the period of £1.58m, against a profit of £355k the previous year, on the back of one-off costs associated with opening new sites, particularly a new flagship site in Waterloo Station, and investment in strengthening its head office.

The accounts update comes as the group recently opened its 16th site in London, at London Bridge Station, with a further store set to open in Victoria Station later this month.

The company hopes to open a further two to three sites before the year end.

It said it hoped to grow its estate significantly over the next 24 months.

Talking to MCA earlier this summer, co-founder Spencer Craig said: “Travel hubs is the real big opportunity for us, and that might eventually may take us outside of the capital, raising brand awareness at the same time.”

In May 2016, Whitbread acquired a 49% stake in the business for £6.8m.