Saw this tonight. It's average. Nice enough staging, strong sound design by the Ringham brothers and I thought Sam Womack was good. But very am-dram style acting from some of the cast let it down. It's fine as a 4 week filler but it's not really West End standard.
Agree with the above, this was an enjoyable enough couple of hours, but completely unremarkable. I can't help feeling it's a bit crappy that some of the actors are being recast for the West End run, especially as Oliver Farnworth is billed on the poster.
I've always found it weird that no matter how realisically it's presented people always seem to laugh at alcoholics. Must be awful for the actors.