Public spending per head in Scotland is higher than the UK average. This is fine because Scotland contributes more to the UK economy than the UK average.
However, other parts of the UK receive much larger subsidies like the London weighting subsidy (which actually covers most of the South East of England). Unison has published a very detailed review of this subsidy which is summarised below.
The detailed review gives much more detail. It is interesting to see what organisations are taking money from customers in other parts of the UK and using it to subsidise the South East of England. The list of UK charities that do this is surprising, to say the least.