I think that you will find it isn`t the widest either as Manston is about 61 metres
but has a large hard shoulder to it as well and used to be 750 feet wide
Copied from Pilot web site
Then there's the runway. At nearly 9,000 feet it's as long as most in the UK-but never mind the length, feel the width-it's 200 feet now but was once a whopping 750 feet. Airport director Alistair Robertson explains why. "This was the closest airfield to occupied Europe, so when the boys came back from bombing Germany with their aircraft damaged or low on fuel they needed somewhere to go in a hurry. You could land any number of aircraft and it didn't really matter whether they had their wheels up or not. There are still people who can remember days when 15 or 16 four-engine bombers just pancaked here at the end of an operation."
Ian
edited 12.00 to add some extra notes