A message has been issued to the investors saying that orders below the price could risk missing out, a source close to the share sale said.

The British government announced on Wednesday that it would sell half of its remaining stake in Royal Mail, leaving it with about 15 percent of the postal service that was wholly state owned until 2013.

(Reporting by Freya Berry in London and Rishika Sadam in Bangalore; Editing by Alan Crosby)