Information for James B Partridge - The Big Christmas Assembly! at Theatre at the Tabard, Outer London (Concert). TikTok star. Crack out the Christmas Jingles! Join James B Partridge (Primary School Assembly Bangers LIVE) for an evening of pure nostalgia, stepping back in time for some joyous singalong tunes from Christmases past. Full of festive musical surprises, throwback mashups and reflections on growing up at Christmas time.