Course textbooks:

Year 1 AS CURRENTLY HALF PRICE ON AMAZON! £14.21

https://www.amazon.co.uk/Chemistry-Level-Year-Student-Book/dp/019835181X/ref=sr_1_6?dchild=1&keywords=Aqa+a+level+chemistry&qid=1592751876&sr=8-6

Year 2 £28.99 on Amazon

https://www.amazon.co.uk/Chemistry-Level-Year-Student-Book/dp/0198357710/ref=sr_1_9?dchild=1&keywords=Aqa+a+level+chemistry&qid=1592751876&sr=8-9

Both years in one book £43.67 on Amazon

https://www.amazon.co.uk/AQA-Chemistry-Level-Student-Book/dp/0198351828/ref=sr_1_4?dchild=1&keywords=Aqa+a+level+chemistry&qid=1592751876&sr=8-4

Also highly recommended: buy it if you can! Jim Clarke's calculation book.

https://www.amazon.co.uk/Calculations-Level-Chemistry-Jim-Clark/dp/0582411270/ref=sr_1_2?dchild=1&keywords=calculations+for+a+level+chemsitry&qid=1592752125&sr=8-2