Jamie’s Italian, the casual dining chain spearheaded by Jamie Oliver, is set to open its sixth site in London next week in Threadneedle Street. The restaurant, which will open in former Bank of Scotland branch in the street, will become the company’s 23rd restaurant in the UK. The chain aims to have 25 sites opened in the UK by the end of the year. It will open its first site in Australia, in Sydney, later this month. The group recently secured a site at Bluewater Shopping Centre.