Tsum Tsums are going to be released across UK Disney Stores on 31st March 2015. Until then Disney have a competition for a lucky someone to win a Disney Tsum Tsum starter pack. The competition is running from the 17th March until the 14th April 2015. To enter you just need to register or login to the Disney website from the competition page:

Disney.co.uk/tsumtsumcompetition