US cereal maker Kellogg, Canadian pension fund Ontario Teachers' Pension Plan and Turkish biscuit company Ulker Biskuvi Sanayi are among bidders offering about £2 billion ($3.27 billion) for British snack and cookie maker United Biscuits, according to people familiar with the matter.

The three were among those making first-round bids for United Biscuits last week, according to these people. Other companies that expressed interest included Italian chocolate company Ferrero SpA and the Philippines' San Miguel Corp., these people said. Neither has submitted a bid yet, one person said.