Sketch comedy is, at best, a mixed bag, and at worst, Tittybangbang. Comedy on BBC Three is, at best, the fantastic Pulling – mercilessly axed last week by idiot manchild channel controller Danny Cohen – and more typically, at worst, new sitcom Coming of Age, a programme that makes the 11 O’Clock Show look like it wasn’t making enough wanking jokes.

So it was shocking to see a programme that fits into both these categories be as cracking as The Wrong Door. There’s a possibility you actually saw it, seeing as BBC Three went against its usual policy of burying any decent programme it accidentally makes and not telling anyone where it is by going and advertising it. And now I’ve messed up by only writing about it after the series has finished, meaning it’s only on iPlayer now. ‘Whoops’.

The show was created by Ben Wheatley, who contributed to Armando Ianucci’s unfairly maligned Time Trumpet, and did the live action sections of the unfairly overrated Modern Toss. The Wrong Door takes on the same disjointed tone, but actually remembers to have some jokes. Even more surprisingly, every sketch is based heavily on CGI which isn’t just bolted on but is integral to them.

Take the running sketch of Melanie and her boyfriend Philip, who is boorish, aggressive, and has a tendency to eat people, given that he’s a T-Rex. It’s quite a funny idea by itself, but given that it’s executed by actors who can act, with CGI of a quality that the BBC has never mustered before (see: Doctor Who), and it’s a bit of a shocker this hasn’t already become the stuff of watercooler legend. (On the CGI front there’s also – London link! -Xotang, a ginormous angry robot who doesn’t realise that poking around London looking for things is killing thousands of puny humans.)

The deeply brutal acts committed through CGI give the show a wonderfully dark edge. And take that with the multitude of British comedy heroes – Matt Berry is a constant through the series as a pool shark, Brian Blessed appears as a train pirate on the Whore of Clapham, terrorising Southern Railways – makes it feel strangely relevant in a way that all the recent sketch show that have comprised the thirtysomething relationship mush and non-jokes of Green Wing, Spoons, and Man Stroke Woman failed so miserably to achieve.

Fortunately the entire series is still knocking around the iPlayer for a few more days, so I strongly suggest you download it, because the odds of a programme this good being recommissioned by Three seem slim.

It was frankly a miracle that Pulling is being allowed one more Christmas before it is gone for good (or, please Lord, picked up Channel Four to replace the increasingly moribund Peep Show). With BBC Three being actively pushed towards a teenage market, it’s impossible to imagine any of the great comedy shows that have appeared on it would find a home there today. Think of Sean Lock’s tower block-bound sitcom 13 Storeys High, and the quickfire Comic Side of Seven Days - a show that held the key to providing satire on Auntie without resorting to the sneery Have I Got News For You or the dreary Mock the Week.

Now think of Cohen’s biggest commission so far, plodding kung fu crime show Phoo Action, and it’s sad to say we may have already seen the last of the Whore of Clapham.