Just been trawling through the bbc press releases, trying to find if there is anything more on the newly commissioned series of Being Human (there wasn't anything new by the way) and found this
http://www.bbc.co.uk/pressoffice/pressreleases/stories/2008/05_may/30/survivors.shtml Basically the BBC are going to remake the 1970's sci-fi/drama Survivors, and Freema Agyeman is going to be in it, with a fairly major part by the looks of things - the part she's got is one of character who was a main character in all of the original three series of Survivors. It seems like it's filming at the moment for broadcast later this year.
Wonder what this means for her being in later episodes of Doctor Who and or Torchwood - maybe she'll just come back and do guest appearances, that would be good.