The class I did was this one at the St Brides Institute just off Fleet Street: http://thecentredbody.co.uk/ante-and-post-natal/pregnancy-pilates.php It was very low impact but quite a nice relaxing way to spend a lunchtime! Slightly embarassingly I feature in the photos on the website but I promise I am not connected at all to Jacqueline who runs the courses (and is lovely) - she just happened to use our class to take some photos for her website! I can't do 23/24th but I can do 17th - general consensus should obviously win out, I can always join the next meet up. I have been to ToastED - it is very nice, but not sure how pregnancy friendly their menu is - I seem to remember eating raw egg and mouldy cheese when we went earlier in the year and my husband had liver! - but that may have just been the menu at the time and me not focussing on the other options! I'm going to look into the NCT refresher as well - sounds like it might be a nice way to focus on the new baby!