The opposite does happen, Geezer.
When the economy is "overheating" (that is, inflation is becoming a problem) Government tries to control it by increasing interest rates. It does this via the "independent" Monetary Policy Committee of the Bank of England. This effectively takes more money from individuals and businesses.
What has happened now is that stagnation in the economy has, at least for the moment, removed the threat of inflation. To stimulate it, interest rates have been reduced to near zero and there is nowhere else to go with that strategy. Hence the �printing money� plan.
This is unchartered territory for the UK and carries a number of risks. Not the least of these is the renewed threat of inflation. When the economy recovers (as it will) there will be far more money available and this will chase goods and put up prices.