Originally Posted by DaveReidUK
Not to be confused with Heathrow's original 34L
34L was simply 34 because there was never a 34R. 34 was an entirely different runway to either of the 33s.
This 1955 picture differentiates them all nicely. 16/34 was known as 'Runway 3' and closed in 1949. 16 hasn't been used since 1949...other than in error by Captain Waite in G-AMOK one foggy day in 1953.