UK services sector accounts for ~75% of economic output and jobs. Manufacturing is ~17%. Construction is most of the balance.
UK jobs in the current manufacturing sector are likely to be high skilled. Unless we are prepared to work on similar pay and conditions to those in China, India etc, the job opportunities for less advanced skills will be limited.
Turning back the clock to create manufacturing jobs for lesser skills by, for instance, building tariff barriers would simply diminish the standard/quality of living for most.
We are the architects of change - we surf the internet to find the best value deal which meets our need usually based on price. For those who trained in traditional apprenticeships 40 years ago - the world has changed and skills now required are very different.
Manufacturing may come back to the UK. But it will take full advantage of the automated low labour input machinery now used. It will not create lots of new jobs - only those who can deliver the high level of skill needed to operate them.
It will be good for the economy (reduce imports. possibly increase exports), and allow manufacturers to be more responsive to demand rather than cope with remote contracts and long lead times.
Ìf it increases exports, decreases imports, the net result is increased GDP, decreased government borrowing, releases money for investments into sectors that will raise employment opportunities, thus increasing tax revenues, both direct and indirect, further reducing government borrowing, releasing monies further etc etc.
Thus theoretically is a consistent spiral, bringing the national debt down, thus reducing interests payments further fueling government borrowing down to zero.
So bringing work back into UK manufacturing will in itself not directly raise employment initially, but by using automated production techniques will keep the labour cost down, allowing products to be competitively priced against imports, thus enabling the growth as outlined above.
All it needs is the will and the nerve by government and manufacturers to kick-start it, and fully support it during its infancy.
It's not rocket science after all that's needed, it's nerve, government stability, incentives for medium to long term gains and disincentives for short-term capitalisation of cash.