The Government promised 1,800 extra police officers over three years. Then after it became clear that would fall short, they lied and claimed their promise was 1,800 new police officers (ie just replacing retiring ones with new ones).
Everyone knows it is a lie. The Minister was explicit that the target was 1,800 additional until the point the PM got it wrong in the House.
And further proof, here is an extract from the November 2019 Police News.
Absolutely clear that it is an 1,800 increase that was promised, despite Government denials.