‘Radically Reshaped’ BBC to Include Fewer Jobs and More Reruns

This is also a drawback for the affected workers, as the BBC has two different paygrades, one for London, one for the Rest of Britain

No drawback at all, the BBC like any other company which does London weighing pays it strictly because London is that much more expensive to live in. If they move to Salford the employees won't be paying London prices so have no need for the additional London pay rates.