Great Britain competed at the 2008 Summer Paralympics in Beijing, People's Republic of China. Great Britain sent a delegation of around 400, of which 212 were athletes, to compete in eighteen sports at the Games. The team was made up of athletes from the whole United Kingdom; athletes from Northern Ireland, who may elect to hold Irish citizenship under the pre-1999 article 2 of the Irish constitution, are able to be selected to represent either Great Britain or Ireland at the Paralympics. Additionally some British overseas territories compete separately from Britain in Paralympic competition.

Britain finished second in the medal table, behind host nation China, winning 42 gold medals and 102 total medals, equalling the team's position in the medal table at the 2004 Athens Games. The number of medals won was an increase on the 94 medals and 35 golds in Athens. The team was the most successful in two decades, with 80 different athletes winning at least one medal. The United Kingdom was the next host of the Summer Paralympics, holding the 2012 Games in London.

Every participant at the Paralympics has their disability grouped into one of five disability categories; amputation, the condition may be congenital or sustained through injury or illness; cerebral palsy; wheelchair athletes, there is often overlap between this and other categories; visual impairment, including blindness; Les autres, any physical disability that does not fall strictly under one of the other categories, for example dwarfism or multiple sclerosis. Each Paralympic sport then has its own classifications, dependent upon the specific physical demands of competition. Events are given a code, made of numbers and letters, describing the type of event and classification of the athletes competing. Some sports, such as athletics, divide athletes by both the category and severity of their disabilities, other sports, for example swimming, group competitors from different categories together, the only separation being based on the severity of the disability.

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