I have since been back to see it properly, and can therefore review, at least briefly, since there have been loads of good reviews already!
It's not an easy play, and only just counts as the dark comedy it's billed as - it's quite harsh really, and you laugh, but then feel guilty that you are laughing, because it's a play about paedophilia, mostly. And dysfunctional families.
But let's squee first. Colin plays Carlos, who is a vegetarian, gay, bi-polar compulsive fantasist! You couldn't make it up :) I want to write for Carlos, if I thought anyone would be interested enough. He's got a lovely sly wit, and I have to say *iz shallow* Colin is ridiculously hot in his brown skinny jeans and longer, messier, curlier hair. He has a bit of beard scruff too. I am a bad woman.
As for the rest - think all the cast are brilliant in their performances, and it's a rather well balanced play, in that no-one escapes blame, although some are much worse than others. Whether the father is guilty or not informs the whole, and the audience is kept guessing, especially as they've changed a line from the first performance to make it more ambiguous. But you do find out in the end, which I like, because these experimental plays can be quite frustrating sometmes in their ambiguity :)
My only complaint is a small one - the cast's accents are all over the place! :) The Dad is Welsh, the ex-farm worker Tania is Irish, Colin sounds sort-of Mockney? The rest are RP, even Tania's son Joaquin - and considering the play is set in Columbia, I don't see a reason for any accent shift, and it jarred a bit for me.
Still. I'm going again, I may pick up on more nuances next time... :)