The permanent closure was announced in a statement on the restaurant's website, describing how it had suffered in this 'incredibly difficult year'.
Headed up by MasterChef: The Professionals 2009 winner Steve Groves since 2013, the restaurant was a popular destination for high-powered business people, politicians and socialites. It was launched in 2010 by Roux Jr in a listed building designed by Alfred Waterhouse, the architect of London’s iconic Natural History Museum.
The statement reads: "Dear guests. Our restaurant has regrettably suffered during this incredibly difficult year. That, combined with the ongoing uncertainty ahead, has resulted in the permanent closure of Roux at Parliament Square.
"We thank our guests for their patronage and support and extend a special thank you to Michel Roux Jr., Head Chef Steve Groves and every single member of the team for their endless dedication over the past decade."
Despite a Michelin star proving elusive for the restaurant, it did receive critical acclaim, and was ranked at number 45 in the Estrella Damm National Restaurant Awards list of the UK's top 100 restaurants.