Travel food giant SSP Group has seen like-for-like sales up 3.2% thanks to passenger growth in the air sector.

On a constant currency basis, revenues for the food operator also increased 4.1% in the same period, from 1 April 2015 to 30 June 2015.

At actual currency rates, given the strengthening of sterling against major European currencies compared with the prior year, total group revenues decreased by 0.1% year-on-year.

The company said: “While, as always, a degree of uncertainty exists around passenger numbers in the short-term, the group remains well positioned to capitalise on the underlying positive trends in its markets.”

SSP operates around 500 brands globally in travel locations, including Upper Crust, Starbucks, Millie’s Cookies, Caffè Ritazza, Burger King and M&S Simply Food.