There are two active bands in the UK recently that grasp my attention: Joe Lean And The Jing Jang Jong & The Ting Tings. I wouldn't say they'll be the next big thing, but at least they might be. Just give them a listen and you can get the idea.
Joe Lean And The Jing Jang Jong-Lonely Buoy
The Ting Tings-Great DJ
btw, congratulation to the Arctic Monkeys!
They won the Best British Band and Best British album in BRIT!
And as usual, they totally dressed up for the occasion: