Copies of several compilations from the British 1960s comedy "At Last the 1948 Show", held by many to be a forerunner of "Monty Python's Flying Circus", were discovered in the archives of the Swedish broadcaster SVT, to whom the producers Rediffusion London had sold them upon the companies' loss of its broadcasting licence. The master tapes, along with much of Rediffusion's programming, were wiped or disposed of by London successor Thames Television. Their recovery enabled the reconstruction of otherwise missing original editions of the programme, meaning most of the series exists in visual form.