On MN there are those on £150K in London who saythey are struggling as they have a massive mortgage, high childcare fees, get no child benefit and lose their personal allowance pay higher tax on the majority of their salary. Then there are others who are on £35K in Hull with UC and child benefit top ups who say they are managing fine as have a small mortgage and also get some government help for child care fees.
The above is because of this
Earnings and income go much further in some parts of the country, and always did.
One of the biggest, perhaps the biggest, costs in society is housing. London housing costs are extreme.
Although the example the previous poster gave of a couple on £150K is of high earners, there's millions in London on the national average wage, and many on the minimum wage.
And London has, I understand, the longest waiting lists in the UK for social housing. Childcare costs are higher in London too, especially as fewer people can afford to live near their families so less chance of grandparent help (obviously not every grandparent can help even if living nearby but many can and do). So obviously people in London often struggle a lot more than a family in social housing or owner occupier in Hull.
It's not as if everyone from London or the SE can simply move elsewhere. Aside from family or job commitments, it would impact on the areas they move to. As we see on the many threads about the impact of regional 'blow-ins' adding pressure on housing, jobs, and public services.
Perhaps worth noting here. The stats show that London has the highest pensioner poverty rate in the UK.