I saw this play yesterday (1st august 2011). Must say, I thought it was just okay. The first half was really boring, very corny jokes. The second half somehow was quite enjoyable, the repartees were well-thought and timely delivered. Overall, I'd give it 2 stars on 5. I don't exactly regret watching the show, but had I a better alternative, I would have definitely opted for the alternative.
(I got excellent stall tickets on offer for £24 , that's partly why I don;t regret watching it. Had I paod £50 for the same tickets, my review woudl have been a lot more severe)