To get back to the OP's question, it didn't really get much attention in Britain once it actually ran.
There was a flurry of tabloid interest when Michelle Ryan was cast, and when ITV bought it, but it had already been cancelled by the time ITV actually started showing it (British stations often hold back American shows until January, so there's enough of a stockpile of episodes to be able to run them without weeks off).
So it was burnt off on the digital channel ITV2, without the profile-boosting repeats or first screenings on the main channel ITV1 that other imports got - for instance, Dexter runs on ITV1 on Thursday, with ITV4 repeats on Friday and Monday, Supernatural (ITV2 twice a week, with an ITV1 showing to come later in the year with season two repeating on Tuesdays in the meantime) or Pushing Daisies (ITV1 only this year, but it also got ITV2 repeats last year).
As benchmark figures, a decent rating on one of the five terrestrial channels is maybe 5 to 7 million (on BBC1 or ITV at least - BBC2, Channel Four and Five are a bit lower), whereas anything over 500,000 on a digital channel is a major success. And I don't think Bionic Woman was exactly a success for them...