They are Oxford University Press, Harper Collins Publishing Company, Royal Publishing Company, Macmillan Publishing Company, Bergman Publishing Company and Longman Publishing Group Company.

1, Oxford University Press: Oxford University Publishing Department, founded in16th century. 2.HarperCollins Publishers Ltd: a large British commercial publishing group, established in 18 19. 3. Her/his permanent office of Majestic: British Government Press, established at 1786. 4. Macmillan Publishing Co., Ltd.: A large British commercial publishing group, founded in 1843. 5.Pergamon Press Ltd: a large British commercial publishing group, and also the largest scientific and technological periodical publishing house in the UK. Established in 1948. 6. Longman Group Co., Ltd.: A large British commercial publishing group, founded in 1724.