I was looking at this a week or 2 ago.
for the first week/weekend, the BFI numbers are like this
December 2023:
Godzilla Minus One £816,891
The Boy And The Heron £1,640,667
2024:
Blue Giant £21,819
Demon Slayer: To the Hashira Training £641,878
Gundam Seed Freedom £37,580
Spy x Family: Code White £280,729
Haikyu!!: The Dumpster Battle £270,095
Blue Lock The Movie - Episode Nagi £118,115
Dan Da Dan - The First Encounter £40,518
My Neighbour Totaro £69,996
Macross Plus £10,806
Detective Conan: The Million-Dollar Pentagram £35,133
(Bocchi wasn't mentioned on the BFI numbers, not sure why)
Though, those numbers do miss out several things and aren't perfect. Is also just the first week, but for many thats more or less it. The Boy and The Heron made more money this year (thats not the 1.6 million here, since that was last year) than anything else though.