This page has all the GCP textbooks I can get ahold of. So, if you wanted them for free, here you go!
Note: Due to me not expecting anyone to actually care about this site, only the AQA books have the png backgrounds. Some of the PDFs are low quality if I can't find them in any better quality sorry

Almost all of these books have been acquired though people who are willing to share their CGP codes, or have sent their book files to me. If you ALREADY OWN a book that's not on this list, don't hesitate to get in contact and I'll walk you through how to get the files to me! Opien3459@gmail.com If you have any questions, issues or bugs, also get in contact. If I don't reply within three weeks, shoot me another email, I've probably missed your message.

if CGP asks, we will take this site down.

AQA
Biology GCSE textbook (higher tier)
Biology GCSE textbook (higher tier) (PDF)
Chemistry GCSE textbook (higher tier)
Chemistry GCSE textbook (higher tier) (PDF)
Physics GCSE textbook (higher tier)
Physics GCSE textbook (higher tier) (PDF)
English Language GCSE textbook
English Language GCSE textbook (PDF)
Physics A-level (PDF)
Combined Science GCSE Foundation Revision Guide
Combined Science GCSE Higher Revision Guide P1     Combined Science GCSE Higher Revision Guide P2
Computer Science GCSE Revision Guide (PDF)
English Language GCSE Revision & Practice (PDF)
English Literature GCSE Revision & Practice (PDF)
Maths GCSE Foundation Revision Guide (PDF)
Maths GCSE Higher Revision Guide (PDF)
Chemistry GCSE 9-1 Revision Guide

Edexcel
English GCSE Power And Conflict Poetry Guide
English GCSE Unseen Poetry Guide
Physics GCSE revision Guide
Physics GCSE Textbook
Chemistry GCSE revision Guide
Chemistry GCSE Textbook
Biology GCSE Revision Guide
Biology GCSE textbook
Maths GCSE textbook (higher tier)

OCR
Computer Science GCSE Complete Revision & Practice

No exam board specified/can be used under any exam board
A Christmas Carol GCSE Text guide



Yet to be uploaded (but I have)(email me if you need them rn)
Macbeth text guide
Edexcel english lang revision guide