Principle Cleaning Services is a market leader in providing corporate, commercial cleaning in London. Founded in 1989 by our Chairman, Doug Cooke and an employee-owned company since 2023, Principle has an annual turnover in excess of £70m and employs 2,300 people. Principle’s passion for people, quality, sustainability and innovation is at the heart of the business. Principle is proud to provide its services, which include building, estate, window, data cleaning and specialist cleaning, to some of London’s most iconic and prestigious landmarks and buildings including 22 Bishopsgate, The Shard, 30 St. Mary Axe and Lloyd’s of London, and mixed-use estates including London Bridge, King’s Cross and Television Centre. Principle’s aim is to lead the market, be the UK’s most sustainable cleaning company and the employer of choice in the industry.