The "late announcement" extending opening hours to 05:00 on Monday means taking officers away from other duties, the National Police Chiefs' Council says.
The Tory leader used Prime Minister's Questions to attack government ministers and Labour MPs following Sir Keir Starmer's resignation as Labour leader.
The former DUP leader entered calm court on day one calm and relaxed, but by the end he was alone as the jury found him guilty on 18 child sex abuse charges.