Thanks Grannygravy, yes you are correct, printing more money causes devaluation, a bit like playing Monopoly
So the £450 billion the government pumped into the economy as 'Quantitative Easing' in 2007/8 (and the £60 billion after the Brexit vote) caused 'devaluation?
A great deal of the QE money wasn't 'borrowed' from anyone. It was just created by the Bank of England.
The pound was certainly 'devalued' after the Brexit vote, but that was in the financial markets (and Farage and his friends made a killing on that 'devaluation') and the financial markets don't have a great deal of bearing on the real, everyday, economy. The financial markets are mainly a gambler's paradise.