More than 200 engineers and technicians have just completed a once in a decade project to resurface the Southern Runway at Heathrow, as part of a £100 million investment in the airfield in 2024. Work on the 50m wide 3659m long runway, which is the equivalent to around 40 football pitches, is timed meticulously to happen overnight while flights are not scheduled and finished in time for the first aircraft to take off or land back on the runway at 06:00. (....)