Each awarding body publishes past papers (usually from a year ago) for teaching purposes. If you wish to look into the subjects in more depth please check the list of all examination subjects studied at Bramhall High School and the relevant examination codes.
The examination board website links are listed below:
Edexcel – Pearson Edexcel
OCR – Oxford Cambridge and RSA
Eduqas – Eduqas/WJEC