These may be helpful:

Overview – GCSE Statistics Overview | Stats Academy

Edexcel – Course planner – 2 year & 1 year GCSE_Statistics_Course_Planner

Text Book- Statistics GCSE (Tim Hannagan (auth.)) (z-lib.org)

ANOTHER GREAT resource – https://www.statsacademy.co.uk/chapter-notes
This is online and the next one you can download.
Revision Book all chapters

Extra material downloaded statistics book
USEFUL AS HAS LOTS OF EXAMPLES – SOME ARE HIGHER SO CHECK

Teachers Guide –the component parts of the statistical enquiry cycle SEC_Teaching_Guide_and_Practice_Questions