 Langdon & Every merged with Davis Belfield & Everest in 1988 to become Davis Langdon & Everest, and in 2004 Davis Langdon & Everest converted to a Limited Liability Partnership to become Davis Langdon LLP.In October 2010, the company became part of AECOM Technology Corporate – a global provider of professional technical and management support services.From that date Davis Langdon became known globally as AECOM's Program, Cost, Consultancy team, whilst presenting its services to the market as Davis Langdon, An AECOM Company.