The Labour Government have a 156 seat majority, they will serve a full term +/- the time the Labour PM decides when is most advantageous to Labour to call an election.
The Government are currently front loading the difficult/unpopular policies while at the same time making the investments in the NHS, education, public services and infrastructure that cost big but deliver the improvements the electorate demand.
Enacting these policies earlier give time for them to bear fruit before the next general election.
No amount of petitions, or online ranting is going to budge a Government with a 156 majority.
Out of curiosity, where are these thousands of skilled professionals / tradesmen going?