This is a great site for all general revision and caters for KS1 and KS2. No passwords needed.
KS1: http://www.bbc.co.uk/bitesize/ks1/
London Grid for Learning Content Grid
London Grid for Learning Content Grid – free apps and resources for EYFS to KS2.
http://www.lgfl.net/pages/Content-Grid.aspx (Choose KS1 and subject e.g. Maths)
Woodlands Junior SATs revision (interactive)
http://resources.woodlands-junior.kent.sch.uk/revision/
Maths
Interactive games to support general Maths learning/practise in topics including Shape and Weight, Calculation and Money.
http://www.crickweb.co.uk/ks1numeracy.html
http://mathsframe.co.uk/ (most games do not require subscription)
http://mathszone.co.uk/ (range of Year Levels available)
http://www.ictgames.com/resources.html (variety of maths games sorted by strand)
http://www.topmarks.co.uk/maths-games/5-7-years/counting
https://uk.ixl.com/ (Maths quizzes by year group)
http://www.snappymaths.com/ (Maths resources by year group)
https://nrich.maths.org/9412 (Problem solving and reasoning)
Multiplication Facts
Huge range of fun games to learn multiplication facts for KS1 and KS2 pupils.
http://www.multiplication.com/games/all-games
English
http://www.topmarks.co.uk/english-games/5-7-years/letters-and-sounds (includes spelling and grammar activities)
http://www.crickweb.co.uk/ks1literacy.html
http://www.funenglishgames.com/
http://www.everyschool.co.uk/english.html (reading, high frequency words, stories and writing)
http://www.yes2chess.org (Online friendly play. International competition for ages 6 and over)
http://www.bbc.co.uk/bitesize/ks1/literacy/http://www.bbc.co.uk/bitesize/ks1/literacy/
https://www.gamestolearnenglish.com/ (Games to learn English)
http://learnenglish.britishcouncil.org/en/games (Games to learn English)
Cross-curricular: