As far as I'm aware, Ug, MPs have been at work continuously (apart from their official holidays) ever since the parliament building was closed. In fact, I'm sure that any decent, hardworking MP would tell you that physically attending parliament is only ever a part of their work.
Your 'time they were back at work' attitude is not only insulting to MPs, with its implication that they've been dossing around for a couple of months (they leave that bit to the PM) but also seems woefully uninformed.