The Conservative candidate to be the next London mayor called for the police to be given full backing after a rally to mark 100 days until voters go to the polls.

Zac Goldsmith addressed party supporters at Hartley Hall in Mill Hill, and was joined by Prime Minister David Cameron who gave the Richmond MP his full backing.

Speaking afterwards, Mr Goldsmith admitted there is a case to be made for more officers to wear body cameras, when questioned over the death of Jermaine Baker during a police operation last December in Wood Green.

No body worn cameras captured the incident and a firearms officer has been suspended pending a homicide investigation.

Mr Goldsmith said: “It is an argument for body-worn cameras. Policing in London goes further than anywhere on earth in terms of the numbers of officers.

“The bottom line is that you have got to back the police. The police are not asking for excessive powers, they are not asking for militarisation of their officers on every street. They are asking for the tools they need in the modern age to keep people safe.”

Mr Cameron also gave his backing to having more armed police on the streets, after Commissioner of the Met Police Sir Bernard Hogan-Howe announced 600 more armed police officers would be trained.

He said: “I intend to discuss this personally with Sir Bernard Hogan-Howe, and seek his assurances that armed police will have the appropriate training.

“When you have seen things like Paris, you have got to make sure there is a sufficient capacity of armed response vehicles to go to multiple incidents that could take place. They will be trained to very high standards, we just have to make sure we do everything we can to keep Londoners safe.

“We have to guarantee the continuation of neighbourhood officers; that matters because in the end the best relation between people and the police is when officers are from those communities. That’s what we are going to continue doing alongside having more armed officers.”

At the rally, Mr Cameron warned that electing Labour candidate Sadiq Khan would make Londoners “lab rats for a Corbyn Britain”. In spite of the chaos in the Labour party, however, Mr Khan remains ahead of the Conservative Goldsmith in the majority of polls.

Addressing the issue, Mr Cameron said: “It’s a very vital contest, and is definitely a close election. We are going to work very hard, and we are going to take nothing for granted. But we have to be very clear about the choices.

“The Labour candidate is clearly someone who backed Jeremy Corbyn and his crazy economic policies.”