https://corbettmaths.com/wp-content/uploads/2019/11/November-Conundrums.pdf
https://www.mathsbox.org.uk/problems.php
https://www.ukmt.org.uk/competitions/solo/junior-mathematical-challenge-paper
Dfm to KS3 as well.
Parallel website (Simon Singh)
8+ booklet google classroom (SWI)
https://drive.google.com/file/d/10CYOTZsGEvSNuCRiNOsPvrS0tFkjko9R/view?usp=sharing