[Mike]

Would the jingle be outside of rights? Wouldn't ITV hold the copyright? Or just something more basic? After all, the LWT and Thames jingles are usually left intact.

Probably not a rights issue, the Central idents are published or were published by Rainbow Music Publishing Ltd, which was later named Carlton Music before reverting to the Rainbow name, they were owned by ITV Studios before they finally dissolved them in 2016, so I would assume ITV Studios own the rights to most of Central's music archive. Not quite sure on how/why it was split but some are 49% owned by EMI Blackwood and 51% owned by Rainbow.