However, not every region or country received Thunderbirds in this format. ITC also sold the series in half hour blocks, in which every episode was edited into two instalments, with each first part ending on a cliffhanger. As a result this doubled the number of episodes, and became a popular alternative for broadcasters. This format remained for sale up to ITC’s collapse, and received an overhaul when Carlton bought Thunderbirds in 1999. Promoted as definitive and digitally remastered editions, the 64 ‘new’ episodes were sold to counties such as Canada (4 nights a week on primetime YTV) and Australia (weekend mornings at 6am).