Mien Tay, the Vietnamese restaurant chain, has opened its first site outside of London, in Northampton. The company, which was founded in 2008 by owner My Le, has taken a site in Wellingborough town centre. The group opened its first site in Shoreditch, before adding a further site in Battersea in 2009. It is thought that the group is looking at opportunities in Fulham for its fourth site.