A link following the Brexit vote, relevant to exchange rate changes:
https://www.bbc.co.uk/news/business-46883147
See below where to find the relevant section within the spec:
Edexcel spec reference 4.1.8 (d) Factors influencing floating exchange rates
AQA spec reference 4.2.6.4 How exchange rates are determined in freely floating exchange rate systems.
OCR spec reference P25 Evaluate the causes of exchange rate changes