Maths:
• https://ttrockstars.com/login (Times Tables)
• https://corbettmaths.com/5-a-day/ (variety of test questions)
• https://myminimaths.co.uk/year-6-mini-maths/ (amazing for general practice, generates worksheets)
• http://primarygamesarena.com/Subjects/Maths (fun maths related games)
• https://www.topmarks.co.uk/ (amazing for general practice through games)
• https://www.sumdog.com/ (fun maths related games)
• http://timestables.me.uk/ (a free online times table test)
• https://www.khanacademy.org/sat (good for SATs practice)
English:
• https://student.readingplus.com/seereader/api/sec/login (Reading comprehension)
• http://www.grammar-monster.com/ (for all your grammar needs including tests and definitions to help understanding)
• https://www.teachhandwriting.co.uk/ (good activities for improving handwriting)
• https://www.bbc.com/education/subjects/zv48q6f (good all-rounder)
• https://www.topmarks.co.uk/ (good all-rounder)
• http://primarygamesarena.com/Subjects/English (fun English related games)
General:
• https://www.theschoolrun.com/ (great for definitions/ explanations for parents)
• https://www.bbc.com/education (great for definitions/ explanations for parents and children)