Yeah London Premiere happened yesterday so Brit Critics have given reviews
Positive:
Guardian 4/5
The Telegraph 4/5
Totalfilm 4/5
Empire 3/5
Negative:
Evening Standard - 2/5 (LOLOL @ comments section for the review)
Some of those ones are on Rottentomatoes already (and the rest should go on soon enough)...and Guardian/Telegraph giving it good scores is a great sign.
Along with that many tweets from people who saw it at the premiere are gushing about it...some are negative however.
Think Rottentomatoes rating will be between 75-85%...which is great. Not amazing but sets it up for an awesome sequel...especially because of what is revealed in the mid end credits scene tehehe