Charles Spencer's review is up from the Telegraph, and it's quite the twister:
"There is an air of compulsory fun at the start of this send-up of the Eurovision Song Contest that, combined with the intolerable crush of a West End first night, succeeded only in putting me into a filthy mood."
"Ever since he sent himself up so mercilessly on Ricky Gervais's Extras, Dennis has been a hero of mine and his performance as a spectacularly dim and cheesy presenter, whose perma-grin barely falters however spectacularly things go wrong, strikes me as a comic tour de force."
"You might plausibly argue that to parody the Eurovision Song Contest is pointless, since the real thing does the job so well itself, but somehow Eurobeat works. The needling relationship between the two presenters, the brilliantly accurate pastiche of various naff pop idioms, and the audience participation, in which you vote for your favourite song via text message, prove an almost continuous pleasure."
"But for most of its length, Eurobeat hits its target bang on, and Glynn Nicholas's production proves the most exuberantly enjoyable musical to have opened in the West End since Hairspray. As the sign outside the theatre promises: you'll laugh until the tears run down your legs."
Telegraph Review