Donald Trump's claim on MSNBC Tuesday, according to which some Muslim neighborhoods in Paris and Britain are no-go areas for police, has received the endorsement of London policemen interviewed by Breitbart London and the Daily Mail.

Trump had said: "We have places in London and other places that are so radicalized that police are afraid for their own lives."

Home Secretary Theresa May rejected these claims Wednesday, insisting: "The police in London are not afraid to go out and police the streets."

But a Metropolitan Police officer, speaking on condition of anonymity, told Breitbart London: “Islamification has and is occurring. Muslim areas are not new.”

The officer added: “When I was a teenage lad in [B]urnley there were no go white areas. This is the case still nationally… including London where you have to have extra vigilance in certain parts when you are working."

Another serving police officer told LBC radio police weren’t scared, but admitted his higher-ups had told officers to avoid wearing uniforms in certain places in the capital.

“There has been a time when it’s been advised not to wear half-blues or uniform to and from work. It’s like damage limitation. You try to do the most you can to prevent anything bad from happening," he said.

One serving officer cited said that Trump had "pointed out something plainly obvious, something which I think we aren't as a nation willing to own up to."

A Lancashire Police officer told MailOnline: "There are Muslim areas of Preston that, if we wish to patrol, we have to contact local Muslim community leaders to get their permission."

'If you are beheaded, it's your fault'

One officer from Yorkshire said on the online forum Police.Community: "I'm not allowed to travel in half blues to work anymore IN MY OWN CAR as we're 'All at risk of attack' - yet as soon as someone points out the obvious it's 'divisive.'

He added: "In this instance he (Trump) isn't wrong. Our political leaders are (at) best either ill-informed or simply being disingenuous.

"He's pointed out something that is plainly obvious, something which I think we aren't as a nation willing to own up to - do you think a US Police Department would ban officers from wearing their uniforms under jackets etc due to FEAR of their cops being killed by extremists?

"We implement half measures such as 'No-one is allowed to come into work half blues, even in your own cars because if you get beheaded it'll be your own fault.

"It would be seen as un-American, un-democratic, not the done thing... In the UK though we accept it."

Another Met officer who resigned this year said: "I was a PC in the Met for 11 years - I resigned as I couldn't handle it anymore. PCs have come out to find police cars having the brake lines cut and sometimes their own personal cars damaged."