L.E.K. Consulting is an international strategy consulting firm, with headquarters in London.
Started in 1983 by three partners from Bain & Company, James Lawrence, Iain Evans and Richard Koch, L.E.K. has since grown to over 850 consultants and 20 offices worldwide. The firm now operates as a single global partnership and advises 20 percent of the world's largest companies, as well as leading private equity firms and governments. It stands out as the only major global strategy consulting firm to have grown from a UK base.
L.E.K. is generalist strategy consultancy with expertise across all major industries. It is a principal adviser to private equity, and was the number 1 adviser in number of transactions in Europe during 2007. L.E.K. is a leading adviser to the biotech industry and is known for its airline, surface transport, financial services and media and entertainment practices, as well as its expertise in alternative energy.
L.E.K.'s primary service lines consist of:
L.E.K. is notable among it peers for its strong M&A concentration.
L.E.K. was hired in 2007 by Ofcom to perform a financial review of Channel 4, which revealed that the channel could face losses of up to £100m in the next five years and concluded that the broadcaster's business model was unlikely to be sustainable 
Other recent work includes advising the UK government on achieving its targets for renewable energy
L.E.K. announced that the firm would be the world's first strategy consultancy to become 100% carbon neutral and has developed a tested methodology for carbon pricing