Pound remains close to post-Brexit high http://www.bbc.co.uk/news/business-43793605

A useful link relating to how exchange rates are determined.  See where to find the relevant section within the specification below:

Edexcel spec reference 4.1.8 d) Factors influencing floating exchange rates
AQA spec reference How exchange rates are determined in freely floating exchange rate systems.
OCR spec reference P 25 Explain, with the aid of a diagram, how exchange rates are determined in floating exchange rate systems