Alistair Petrie as Michael Groff Alistair Petrie has portrayed the somewhat insufferable Michael Groff for two series, and we can confirm that he will in fact be back for series three. It's clear that the new series is going to be a big one for Mr Groff, and we look forward to watching him deal with a potential divorce, his brother visiting, and being put on leave after his meltdown at the school play. Image Source: Netflix