Can't go by this, but it all depends on the workload - bit like most of our workplaces really.

It can take three months - and it does sometimes, but you can very often work out a pattern if you know people applying very recently.
By sheer coincidence, various members on here were applying about the same time as us - at that time there were quite a few active members who were talking about their applications - and there was a pattern, they were getting results in just over 5 weeks. I on this made a guesstimate on when we might get our decision - lo and behold my guess was 4 days out (Bank holiday was involved though so that might have made a difference).
Don't think anyone else on here is applying now, so can't do that, but gut feeling is that this isn't going to be a busy time of year. Good luck fella