How can I legally obtain this song? (Say You Don't Want It by One Night Only)?

I am looking for a song by the British indie rock band One Night Only called Say You Don't Want It. The music video has Emma Watson in it, since she's dating/good friends with the lead singer, George Craig. I can't find this song on iTunes or amazon.co.uk, but I really love the song and want to buy it legally. Help? :)How can I legally obtain this song? (Say You Don't Want It by One Night Only)?ACTUALLY to correct the other person, it comes out on itunes on August 23rd.How can I legally obtain this song? (Say You Don't Want It by One Night Only)?it is going to be released on iTunes on August 15 i believe.