The CC has accepted divestment undertakings from Stericycle Inc, Stericycle International LLC and Stericycle Ireland Limited (Stericycle) in order to address the substantial lessening of competition and adverse effects resulting from Stericycle's acquisition of Sterile Technologies Group (STG).

On 12 December 2006 the CC published its final report on the completed merger between Stericycle and STG, finding that the merger may be expected to give rise to a substantial lessening of competition in the market for healthcare risk waste requiring high temperature treatment in northern England, the North Midlands, North Wales, the West Midlands and south-east Wales. The CC has decided to require Stericycle to divest all or part of the STG business to a suitable purchaser.