It's the festive season, and of all the Christmas shows on offer this year, I'm not sure they could possibly come much bigger than Chickenshed's Jack! Playing is believing… As ever, the North London theatre company's end-of-year spectacular is staggering in its ambition, with a cast of 800 in total across four revolving rotas. And if that inevitably means that at times things get a bit chaotic, it's a small price t…
