... ( Interest) ... has recently been abnormally low, to allow the banks to rebuild their profits at the expense of the ordinary citizen.
https://www.bbc.co.uk/news/business-15198789
When interest rates are below inflation, savings are eroded. So is debt (especially Government debt). A Government with large borrowings can shrink them away by allowing inflation to creep up and erode the value of the debt. This is very common, and deliberate. It is a much simpler trick in the UK than in the Eurozone.
As an ordinary citizen, with no power, you will find that the banks charge you interest on your borrowings which is higher than inflation, to enrich themselves at your expense, and pay you interest on your savings at a rate which is lower than inflation, to enrich themselves at your expense. Polonius was right.