Two bodies, two codes, two timelines
Broadcast advertising in the UK is pre-approved on behalf of the major broadcasters by Clearcast before it can air, against the broadcast advertising code. Cinema advertising is cleared separately, by the Cinema Advertising Association, which also issues an age rating determining which certificate films the advert may accompany.
They are not interchangeable and passing one does not imply the other. A film cleared for television may still attract a cinema rating that restricts its pairing, and a cinema advert is delivered as a different master entirely.
The practical consequence is planning. Two clearance processes on two timelines, both of which sit in front of the flight date, is the reason a campaign that has to be live in ten days usually cannot include either channel.