We now have suggestions for priority topics for revision (Edexcel Foundation and Higher) from both 1st Class Maths and On Maths. From OnMaths, we also have topic revision questions and complete practice to try online where each question is marked as students try it. (Subscribers can download pdf files).
There are many revision resources available in this collection.
From 1st Class Maths, Key topic suggestions are available for Paper 3 revision.
At the time of writing, these are for Edexcel Foundation and Edexcel Higher.
Suggested topics for revision for Edexcel Paper 3 Foundation and Higher are also available from on maths. Practice questions are available for each suggested topic. Subscribers can download pdf files, but free access is available for all to practice online. For example, choose the Topic paper, Accuracy Error Intervals for a short paper.
Practice Papers and video walkthroughs from OnMaths for Paper 3 are available for Foundation and higher.