Purpose - The purpose of this paper is to detail the reasons behind, and the successful process adopted for, the introduction of a six sigma programme within a leading, and award-winning, UK manufacturing business. Design/methodology/approach - The paper outlines the driving factors behind the adoption of six sigma at Renishaw plc, and details how the training, along with the introduction process, has been focused on helping build firm foundations and overcome internal "scepticism". The study also reviews successful six sigma projects undertaken within the company that have delivered significant manufacturing and transactional process improvements. Findings - Despite initiative fatigue, ongoing business success and a culture wary of any approach that may hinder the innovation that is driving this success, the six sigma programme at Renishaw, which has been supported by a specialist training organisation, has taken root and is now starting to deliver significant business benefits. Originality/value - Many companies have various concerns over implementing six sigma, including the belief that the "strict" process requires too much effort and that it can stifle innovative thinking. This case study details how one company's successful six sigma implementation programme is overcoming these and other "internal" hurdles.