Richard Meyer, group general manager at Ampersand Events, said: "We're thrilled to be named a listed caterer at the Design Museum.
The group achieved an adjusted EBIT of £8.9 million (€104m), £4.3 million (€5m) above the 2015 figure.
Lheureux joined the Science Museum in 2011 as event operations manager before taking on the role of group events operations manager in 2015.
John Adamson, director of Ramside Estates, said: “This is a huge coup for us.
The hospitality offering will feature the Chez Roux hospitality experience with Albert Roux, Michel Roux Jr. and Emily Roux.
Kirk has 20 years of marketing knowledge and joins Amadeus from voluntary and community charity VAST, where she spent seven years.
Henderson was previously head of operations for the company’s dedicated events catering brand, Grazing Events, but will now be responsible for the day-to-day operations across the overall business.
The office and events caterer provided catering for the opening event and served miniature bites such as pressed ham hock terrine with a piccalilli sauce, mini minted lamb wellington with tzatziki,
The newly renovated venue, available to guests for private receptions and corporate events, is located in close proximity to to the Coca-Cola London Eye and complementing the adjacent Riverside Roo
Albert Roux, Michel Roux Jr and Emily Roux will bring an enhanced version of the Chez Roux hospitality experience to the Cheltenham Festival, Investec Derby Festival and the QIPCO Guineas Festival.