Celtic plc is engaged in the operation of a professional football club, with related and ancillary activities. The Company's segments include Football and Stadium Operations, Merchandising, and Multimedia and Other Commercial Activities. The Football and Stadium Operations segment includes all football operations, ticket office, stadium and youth development. The Merchandising segment includes all retail, wholesale and e-commerce activities. The Multimedia and Other Commercial Activities segment consists of all other departments, including sponsorship and rights sales. The principal activity of the Company is to control and manage the assets of the business whilst the majority of operating activity is carried out by a subsidiary of Celtic plc, Celtic F.C. Limited.