Elixirr is a London-headquartered management and digital consultancy founded in 2009 and branded "The Challenger Consultancy," operating under the legal entity Elixirr International plc. Co-founded by Stephen Newton, who serves as CEO, the firm positioned itself against the Big Four and other large consultancies by emphasising partner-led delivery, senior-heavy teams and speed over standardised methodology. It works across six practice areas: Strategy & Transformation, Operational Excellence, AI/Data & Technology, Digital Experience, Research & Insights, and Execution Edge. Clients are predominantly large enterprises across financial services, technology, healthcare, retail, manufacturing, energy, automotive, insurance and media, with the United States generating 63% of FY25 revenue. Elixirr has grown both organically and by acquiring roughly eight boutique consulting and insight firms. It listed on the London Stock Exchange's AIM market in 2020 under the ticker ELIX and operates from around 15 offices worldwide. The firm runs a Graduate Analyst programme placing new joiners on client projects from their first week.