u'vebeenamexed
Whateverhappenedto.......
I worked at the King Alfred part time while I was doing my A'levels, 1985-7. It's an AMAZING building, only a tiny amount of it is used. There's at least 5 floors BELOW the changing room level. When I was working there the lights still worked in some corridors and rooms but not others. We used to go "exploring" with torches sometimes during breaks (and sometimes when we were supposed to be working if we's pulled "sports hall" duty where there wasn't a lot to do!). We found a full industrial kitchen two levels below. We also found a lone corridor that goes under the outside car park and links the main building to the old ten pin bowling/megazone building. Once we think we found the lowest level, in that it has dirt floors rather than concrete, but we'd lost count of how many flights of steps we'd gone down. It is like a maze down there. We never knew what half of it was used for, much of it looked like it had never been used for anything.
If the door you are talking about is the one I'm thinking of, it leads to what's left of the old underground car park, not much of it is left, it was demolished to build the current pool. The old major and minor pools (for those who are old enough to remember them) still exist, they're under the sports halls, the big sports hall (where they held roller discos in the late 80s) is built on top of the major pool and the little one over the minor pool.
Apparently Ryan Harley is kept down there as well.