In October 2016 British tourists going abroad found they were getting less than 1 euro in return for £1. Concerns over the UK leaving the European Union have led to a fall in sterling. This depreciation of the currency is likely to increase costs for UK firms, and squeeze profits, or lead to cost push inflation. However UK firms may benefit from the lower price of their products in foreign currencies.
You can find the value of the exchange rate against various currencies at the Bank of England: http://www.bankofengland.co.uk/boeapps/iadb/Rates.asp
If you would like to see how inflations has affect the purchasing power of a pound within the economy you can an inflation calculator at the Bank of England: http://www.bankofengland.co.uk/education/Pages/resources/inflationtools/calculator/flash/default.aspx
You can find more information on the factors affecting the value of a currency in Chapter 27 of Foundations of Economics (4th Edition).
You can find more information on cost push inflation in Chapter 26 of Foundations of Economics (4th Edition).
You can read about the possible effects of a weak pound on the UK economy at:
1. Analyse the possible reasons for the fall in the value of the pound against the euro.
2. Analyse the possible effects of this fall in the value of the pound on UK business.