"...the Tories have been in power since 2010, and they must hold the responsibility for the situation we have now."
It stretches way back beyond that, Mikey.
QE began as a result of the banking crisis in 2008. I'm not blaming Labour for that crisis, nor for the strategy they adopted to deal with it. Something had to be done and they decided that was the best way to handle the problem. But the nation has been addicted to excessive public spending for decades.
Apart from a year or two either side of 1990 and again either side of 2000, the government has run a budget deficit since 1975. There is simply no will to run a balanced budget (or more precisely, no votes in doing so). To say that it is not achievable is false. The Attlee government inherited a 3% (of GDP) deficit in 1947 due to the huge debt run up in WW2. But by 1950 it was eradicated and a 6% surplus was returned. Yes it was austere, but that is what is needed if the deficit, government borrowing, and the resultant inflation are to be avoided.
This is nothing to do with party politics. The public are addicted to having the government spend around 40% of their income for them. Every time sensible measures are proposed to end this madness, howls of protests result. A recent example is that of "free" childcare. Up to a few years ago the government did not generally fund childcare. It was introduced at 15 hours per week and now stretches to 30 hours per week per child for many people. As is usual with such schemes, there are criticisms that even that is not enough (even though it benefits the recipient parents by about £5k per annum). So we've gone from a situation where the funds were not provided at all, to one where they are provided at a considerable cost, but it is deemed insufficient.
Governments have moved away from who they help (the most needy) to what they fund (for everyone). If the public wants these schemes funded (effectively claiming "free money" which the government has to borrow) then they must be prepared for the consequences and one of these is increased inflation.