These cases tend to be the exception, however; the former nature of the ITV network, in which private independent companies were awarded licences to serve geographical areas for a set period of time, meant that when companies lost their licences their archives were often sold to third parties and became fragmented—and/or risked being destroyed, as ownership and copyright remained with the production companies rather than with the network. The archive of networked programmes made by Southern Television, for example, is now owned by the otherwise-unconnected Australian media company Southern Star Group but Southern's regional output is in the hands of ITV plc. The few surviving tapes of Associated-Rediffusion belong to many different organisations as the majority of Associated-Rediffusion's tapes were recorded in monochrome and therefore deemed of no use upon the arrival of colour broadcasting; as such they were disposed of by London successor Thames Television, although in recent years there have been occasional discoveries, such as a 1959 episode of "Double Your Money," and the remaining missing episode of "Around the World with Orson Welles", found by Ray Langstone in 2011. Many master tapes belonging to ATV have since deteriorated due to bad storage and are unsuitable for broadcasting. In particular, the ATV version of the popular soap "Crossroads" is missing 2,850 episodes of its original 3,555. Also often largely lost are quiz shows; few editions exist of the 1970s version of "Celebrity Squares" with Bob Monkhouse, or Southern's children's quiz "Runaround".