Complex sentence: In the 1950's he also opened the first catering facility at Heathrow Airport and the first full British motorway service station for cars at Newport Pagnell, Buckinghamshire on the M1 motorway in 1959.
Split into simpler sentences: In the 1950's he opened the first catering facility at Heathrow Airport. Later, he also opened the first full British motorway service station for cars at Newport Pagnell on the M1 motorway in 1959.