Itsu, the London-based Japanese sushi bar chain, has opened the 25th site under its smaller format in London, in Mayfair. The chain, which is led by managing director Gerard Loughran, has opened its latest site in Berkeley Square at the start of this month, as it works towards its target of taking its estate past the 40 mark over the next 19 months. The 28-strong group, which was co-founded by Julian Metcalfe and Clive Schlee at the end of 1996, plans to open four new sites in total this year and is targeting a further 10 to 12 openings in 2012. All the new openings are expected to be under the group’s smaller, fast casual format. It currently operates three larger restaurants under the brand in London. The rollout plan is also expected to include the launch of its first outlet outside the capital. Loughran told M&C Report earlier this year that the company was exploring opportunities further afield, with an opening outside the capital a possibility, “probably at the end of this year or at the start of 2012”.