CPM is a UK-headquartered field marketing company established in 1936. The head office in Thame, Oxfordshire, UK, employs approximately 750 office-based people, and over 4500 field agents across the UK and Ireland who specialise in providing people as the "face and voice" of the company's clients' brands. CPM has UK offices in Thame, Warrington and Leeds, and is owned by the world’s largest marketing communications group Omnicom. Clients include WalMart, HP, Nokia, Sky, Kellogg's, GSK and Coles. In 2004, CPM was named "Field Marketing Agency of the year" by Marketing Magazine.