LEGO's newest Harry Potter sets include the Room of Requirement ... which is exclusive to Smyths Toys in the UK & Ireland. Alexis Nedd is a senior entertainment reporter at Mashable.

We've found the best Lego deals on sets from popular ranges including Marvel, Technic, Star Wars and Harry Potter — as well as adult sets ... most Lego deals can be found on Amazon, Argos, Smyth's ...