Welcome to Principle Cleaning Services' LinkedIn page, where we discuss, promote and engage with our visitors on our passion for people, sustainability and innovation. Founded in 1989 by our Chairman, Doug Cooke, Principle Cleaning Services is a market leader in providing corporate, commercial cleaning in London, with an annual turnover in excess of £62 million and a talented team of more than 2,200. We operate in some of the most prestigious buildings in London and our clients include iconic landmarks such as The Shard, 20 Fenchurch Street and 30 St Mary Axe.