andrewM, I regular bore everyone ridged.
The UK invested in service industries, not manufacturing. We are very good at service industries which can be very profitable.
Profitable means tax revenue.
Our designers are very good. Our population educated, but I wonder if educated in the necessary skills? Ask what our education system is for and do the teachers and lecturers have the skills to provide what is required? Most of our educational staff have never worked in business.
We do do some premium manufacturing. However, still the high tax system we have mean anything that doesn't have a high premium isn't going to be made here.
When we were in the EU a whole lot of manufacturing investment was decided by the EU, and it wasn't going to be here; so it isn't. For example though we have some very good car manufacturing here, a whole lot of British badged is done elsewhere in Europe. Ask why?
The Grenadier would have been built in Wales, but local government faffed over planning, so the EU gave a whopping incentive to use a French Mercedes surplus plant. First production isn't going to be built here now.
Until our tax system makes us look ready for business, adventurous, able to do risk, and attractive for investors, then don't expect anything that positive.
Keep voting for those whose can't think further than the NHS and how to prop up the Public sector, then don't be surprised we have decline.