The London Philharmonic Orchestra (LPO) is one of five permanent symphony orchestras based in London. It was founded by the conductors Sir Thomas Beecham and Malcolm Sargent in 1932 as a rival to the existing London Symphony and BBC Symphony Orchestras.
The founders' ambition was to build an orchestra the equal of any European or American rival. Between 1932 and the Second World War the LPO was widely judged to have succeeded in this regard. After the outbreak of war the orchestra's private backers withdrew and the players reconstituted the LPO as a self-governing cooperative. After the war the LPO faced challenges from two new rivals, the Philharmonia and the Royal Philharmonic, founded respectively in 1946 and 1947.
By the 1960s the LPO had gradually regained its earlier standards, and in 1964 it secured a valuable engagement to play in the Glyndebourne Festival opera house during the summer months. In 1993 it was appointed resident orchestra of the Royal Festival Hall on the south bank of the Thames, one of London's major concert venues. Since 1995 the residency has been jointly held with the Philharmonia. In addition to its work at the Festival Hall and Glyndebourne, the LPO performs regularly at the Congress Theatre, Eastbourne and the Brighton Dome, and tours nationally and internationally.