I would class wealth in two ways. Individual wealth in terms of assets/income vs liabilities. This would take into account things like homeownership, personal savings, pensions at micro level, aligned with macro economic factors such as wage growth in comparison to inflation and GDP. I am happy to be corrected but I haven't seen anything that would suggest in the UK that wages are outstripping inflation, personal savings amongst a wide range of ages and incomes are increasing, homeownership (particularly for lower earners) is rising etc.
You yourself (and I agree) have said you are worried about Reform. Part of the reason for their appeal is that people feel disenfranchised, the cost of living is a massive issue as wage growth has stalled whilst consumer goods have increased, rents have increased. Public services are stretched through lack of investment, towns and cities are derelict through lack of investment. A significant % of the population would say their personal 'wealth' and financial outlook has declined.
I would also look at wealth distribution as a key factor. The top 1% own 50% of the wealth. They hoard their wealth in assets, when they do spend a significant % is on luxury items which again circulates the money in a very small and concentrated part of the economy. They are not investing it, shareholders accumulate dividends, that money does not find it's way into workers pockets either directly or indirectly. It (in my view) is no slow to trickle down, it is stuck at the top.
Those on the right (economically) have always pitched the idea that high earners and huge companies are great for the economy as they create money for all. If they did, we would all have more money in our pockets, more money in the bank, more assets in our names.