Of course its poor targeting.
You can't just close the economic gap with the South East by investing in a high street, you need to reverse the effects of deindustrialisation. Heavy industry is the only thing that is going to provide wealth to "The North". Qualifications are lower than the SE/East Anglia and land, generally, is cheaper. Perfect conditions for a revival in heavy manufacturing but our politicians for the past several decades keep getting starry-eyed over "hi-tech" industries, that employ a small number of highly educated people and don't mind the high land costs to do so. In effect, London and the South East.
The only way to restore heavy manufacturing to the UK is an interventionist government policy. But the Tories would rather lose an election than pivot to one and Labour probably don't care either way seeing, on a fundamental level, the basic psychology of the party is virtually identical to the Tory party - very little working class regional representation.