Anyone in London do Yoga?

Thanks for your advice. I have been to Rebecca's class before. I really enjoyed it but find it difficult to commit to 6 week block bookings due to work (she does not offer a drop-in service AFAIK).

If you've done the class before, drop-in is usually fine--ask her. It's only for people who are new that she requires them to gradually build up through the full sequence of classes.