More details coming.
In the meantime, here is their Web page:
https://www.christs.cam.ac.uk/college-life/choir-christs-college-cambridge
and a sample of their singing:
https://www.christs.cam.ac.uk/sites/www.christs.cam.ac.uk/files/migrated-media/college-life-docs/Choir_mp3s/HowellsBritten_HymnToVirgin.mp3