Useful websites :

https://www.pipworthprimary.co.uk/learning-at-home/maths-sats-booster

(Maths and SPAG revision)

https://www.tyndaleprimaryschool.com/page/?title=Maths+KS2+SATs+Booster&pid=178

(all areas)

https://www.swottotspublishing.com/stps-free-online-tests-ks2-grammar-punctuation-test-01 

www.ks2sats.co.uk 

(free and excellent materials to download)

www.satspapers.org.uk

(past SATs papers to download)

www.bbc.co.uk/bitesize

(for revision)