Guinness World Record 2011

Because the book became a surprise hit, many further editions were printed, eventually settling into a pattern of one revision a year, published in October to coincide with Christmas sales. The McWhirters continued to publish it and related books for many years. Both brothers had an encyclopedic memory — on the TV series Record Breakers, based upon the book, they would take questions posed by children in the audience on various world records, and would usually be able to give the correct answer. Ross McWhirter was assassinated by the Provisional Irish Republican Army in 1975. Following McWhirter's assassination, the feature in the show where questions about records posed by children were answered was called "Norris on the Spot".
Guinness World Records Limited was formed in 1954 to publish the first book.
Sterling Publishing owned the rights to the Guinness book in the 1970s and under their management, the book became a household name in the USA.
The group was owned by Guinness Brewery and subsequently Diageo until 2001, when it was purchased by Gullane Entertainment. Gullane was itself purchased by HiT Entertainment in 2002. In 2006, Apax Partners purchased HiT and subsequently sold Guinness World Records in early 2008 to the Jim Pattison Group, which is also the parent company of Ripley Entertainment, which is licensed to operate Guinness World Records' Attractions. With offices in New York and Tokyo, Guinness World Records global headquarters remain in London, while its museum attractions are based at Ripley headquarters in Orlando, Florida.