If your description of 'centre' is still sitting where it got moved to under the Blair/Cameron era, I just don't think we are.
Rutger Bregman, and many others, are making a strong case that the 'centre ground' (if that is thought of in terms of ideas broadly accepted as common sense) is no longer where we thought it was. And ideas that would previously have been seen 'extreme' (citizens income, wealth taxes, higher income tax, nationalised transport, green new deal etc) are now supported by a signficant %, and in some case a majority. And this is most likley has some way to go yet as we get to grips with the real challenges of solving climate change, dealing with the rise of the robots, reducing monopoly power, financialization and so on.
Even on this forum i have seen people saying they agree with almost all Labour policy, but then saying that they are still too 'extremist' to get elected.
Who knows what the hell is really going on, or how all this will pan out in the long term.
But my guess is that the centrist dads club of NSC are in for a few shocks in the coming years.
Yes, if/when all of this finally comes to some form of conclusion it's hard to see the country rushing back to the middle ground.