The BA 757 that flew in to SOU on a divert a few years ago was actually on September 11th 2001 and arrived at approx 19.00, it had diverted to SOU from LHR whilst operating a flight from Geneva I believe. I can clearly remember seeing her flying right over my head whilst it was on approach to SOU heading from the south and the date will always stay in my mind for obvious reasons.
In the past we have also had several BA 737 diversions and in the late 70's and early 80's on more than a few occasions SOU had several BA diverts including 1-11's and Viscounts, I can remember being at SOU and seen by myself on one occasion in the early eighties where we actually had 6 BA aircraft on the apron at the same time, four Vickers Viscounts and two Bac 1-11's, although that was long before the new terminal and apron was opened in 1991.