UK air navigation services provider NATS has signed an agreement with Manchester Airports Group (MAG) confirming a 10-year contract to provide air traffic control and engineering services at both Manchester and London Stansted airports.

The new contract will begin April 1, 2015.

NATS director of operations-Airports Mike Stoller said: “Both airports have ambitious growth goals and we will work closely with MAG to ensure that increased air traffic movements and passenger numbers can be successfully realized.”

In 2013, MAG opened a new £20 million ($33.2 million) control tower—the second largest in the UK—at Manchester Airport, following the £25 million refurbishment of Manchester’s northern runway.

Manchester is the UK’s third largest airport, handling more than 21 million passengers annually and London Stansted the fourth largest handling more than 18 million passengers a year.