"We were keen to stay in London. We are a proud UK business with a very important US division," he said. "We've seen other high-quality technology and online businesses come to market, started by The Hut Group who are neighbours of ours in the north west.
"It seems like a really good time to be talking to the market and looking at raising capital to allow us to continue our expansion."
Peel Hunt and Shore Capital are acting as joint bookrunners and joint brokers on the IPO.