Groundsplitter of NTFA.net has posted some information on the different release dates of the Transformers movie in the Nordic countries. Here is what he has written

Will the Transformers film premiere on different dates in the Nordic countries? According to IMDB and one other site I found, Norwegian theaters will start showing the film on 13 July, while several Swedish film sites lists 3 August as the premiere date, three weeks later.
Apparently the film was slated for a 13 July premiere in Sweden too at some point, but the date has been delayed for some reason.

I haven’t found any release dates for Denmark or Finland. Does anyone have any info?

There is also no information on a UK release date.