Low Traffic Neighbourhoods (LTNs) sometimes make it “harder” for officers to get to their destinations as quickly as they previously could, Metropolitan Police Commissioner Dame Cressida Dick said.

Brought in under emergency Covid-19 measures, LTN's have seen modal filters blocking through-traffic with barriers that are physically or camera enforced deployed in neighbourhoods across London.

Concerns have already been raised about the potential for the environmental scheme to delay ambulances, as reported in Lee Green before its LTN was scaled back in September.

READ MORE: Lee Green LTN delayed ambulance for 'life-threatening' call

Cressida Dick told LBC’s Nick Ferrari on Friday: “What is trying to be balanced for our city is, on the one hand, this great desire in ‘vision zero’ to reduce the number of road deaths to zero, to make this a city in which people are safer to walk and cycle, and to also improve our environment.

“In a sense, the latter is not for me.

"But I am aware that these measures, which are designed to do all those things, can and do slow down all traffic, and they deter people from driving, and that’s part of the point.

“But, on occasion, it is of course harder for our officers to get through streets and roads that they could previously get through much faster.

“I am looking at it carefully and, on occasion, we will have a conversation with Transport for London to point out where a particular thing will cause real difficulties.”

The London Ambulance Service said it had received 11 reports from crews about delays linked to the LTN in Lewisham, all of which it shared with the council.