Although BAEC Tier Points are not exactly equivalent to QFFF Status Credits, there's enough of a similarity that this thread might help:
http://www.flyertalk.com/forum/briti...per-point.html - especially the more recent posts which are obviously most up-to-date.
One thing to look for is cheap Club Europe fares, in particular from Gatwick.
Also, if you can get your head round the Proactive Online Upgrade system (which can offer the opportunity to buy the cheapest economy tickets and then upgrade them to Club for a fixed rate starting from £59 per sector), there are some good cheap SC opportunities to be had there, as anything upgraded in advance should easily net you the SCs for business class:
http://www.flyertalk.com/forum/briti...ng-thread.html