My 1979 Pooleys (I do not believe in wanton replacement) says that nearly every RAF runway was 46m wide. If you can give me a name I can supply the dimensions.
Manston was 61m wide, but that's due to its role, I guess. So was Waddington, as it happens, evidently..
Lossiemouth, Coltishall, Finningley, Leuchars; all 46m, to name a few.
Perhaps Pooleys did not list V-bomber bases; if so I can't help!
Nowadays the civil standard is 50m, which is why people have trouble landing at Southend. I imagine that 46m might be 50 Yards.