In January 2000, he moved from the "Daily Mail" to the "Daily Express". The change was the subject of a contract dispute with the "Mail", leading to the newspaper group's unsuccessful legal action that year. It was believed by their executives that Cainer's switch might lead to a loss of 4% of the "Mail"s circulation to the "Express". After Richard Desmond became the proprietor of the Express titles, Cainer joined the "Daily Mirror" in March 2001. Promised a high-profile position on page 9 by "Mirror" editor Piers Morgan, Cainer's column was soon shifted to a more remote location in the paper. He returned to the "Daily Mail" in June 2004. Cainer's book, "Cosmic Ordering", was published in 2006. He made frequent appearances as a pundit on British TV and radio stations, whenever astrology was in the news. At the "Mail", he was the highest paid journalist in Great Britain.