@paul - this is the second new series. They did 6 approx 10 min episodes last year. But they are all (this new one included) online only, you won't get them on your sky+ box I'm afraid. They are on the 'fosters funny' youtube channel.
they are a bit hit and miss ... the Higson, Whitehouse and Day characters are as good as ever, but the rest are not great. And no Mark Williams - it's not the same without Mark doing 'suits you'.