Wasn't it the law that all state schools had to start with morning worship? It was sad that we were made to sing Christian songs and were too young to even know. My school didn't even let anyone but Jehovah's witnesses opt out of singing Christian/Christmas songs.

Sometimes we sang Streets of London. But most of the time it was gospel songs.

My nephew and niece go to the same school I went to and I'm sure I've heard one of them singing one of the gospel songs.

Edit: still a law.

https://assembliesforall.org.uk/about/law-on-assemblies/

Current law requires all state-funded schools in England, Wales and Northern Ireland to hold daily acts of ‘Collective Worship’. In England and Wales in schools with no formal religious character this worship must be ‘wholly or mainly of a broadly Christian character’. In Northern Ireland the requirement is for ‘undenominational’ collective worship.