This is a pipe dream. If it were not for government spending the UK would have no gdp. It’s basically the welfare state that is creating the illusion of large GDP. Government spending on the UK is now over 20%. The private sector is getting gutted and has for years.
That’s true, in fact the growth in our GDP since 2007 has been government and healthcare. But UK is still ranked one of the highest of GDP the way it is calculated. The other high ranking countries also include a lot of government spending. They all just borrow the money and buy bonds from each other to keep the facade going.