There are currently 24 stands at LBA. I can only recall the following night stopping: 7 x EXS 733, 4 x EXS 752, 1 x KLM F70/100, 1 x BMIR EMB145, 1 x EZE J41. This makes 14 stands occupied, I'm sure Ive missed something here as it always looks packed at night when I go past. Even so I'm sure there are not 10 I've missed so there should be some space. FlyBE look like they're basing a Dash 8 for the LGW soon so that will reduce spare
That list is correct however there is usually 8 LS 737's overnight plus the the TCX A320 over the summer, not that it makes really any difference to the availability of spare stands though