What a load of rubbish. You set budgets and priorities. Simples.
You set strategic direction, and allocate as best you can the available budget to achieve those strategic objectives.
You can't operate on the day to day operation of the Police. That is down to the Chief Constable, who has to operate within the budget allocated
But 70% of the London police financing is provided by Central Government, i.e. the Home Office.
30% is from the London Assembly.
Hoiwever, the Home Office has cut the Police Budget by about £1Billion over the last four or five years, meaning any shortfall has to be met by the London Assembly, (including terror related acts and catastrophes, and subsequent infrastructre and process changes), or some 'policing' simply isn't done.
The Home Office does not release the criteria on which it bases its funding for London police.
Police wage increases are not funded by the Home Office.
The only source of income for the London police via the London Assembly is Council Tax. Any rises in Council Tax is strictly controlled by Central Government.
So we have a system where the London Police is mostly funded by the Home office, who do not fund extraordinary events.
They also control the way, and by how much the London Mayor is allowed to raise funds to fund their 30% of Police funding.
I'd say that puts the Home Office very frimly in control of funding for London police, and therefore the effectiveness of the operation of the London Police.
I'd be pleased to hear your rational argument, rather than your simple dismal as "Rubbish".