Sadiq Khan was in Mare Street this morning to launch his new campaign tackling rough sleeping at St Mungo’s hostel.

A coalition of 18 homelessness charities have come together to form the London Homeless Charities Group as part of the mayor’s new No One Needs to Sleep Rough in London initiative.

One single donation service has been created so that all proceeds can be split equally between the organisations involved.

Mr Khan decided to launch it at St Mungo’s where a permanent hub is being built for the No Second Night Out service – which provides beds for rough sleepers who find themselves on the street for the first time.

While there he also revealed a new policy that will see emergency shelters across the capital have to open every time the temperature drops below zero. The current rule, brought in by Boris Johnson, is that shelters open when three consecutive days of sub-zero temperatures are forecast.

He said: “I know there are millions of Londoners who want to do something to help rough sleepers get off the streets for good. That’s why I am pleased to be joining forces with our new coalition of charities dedicated to this cause, offering a single donation point for Londoners who want to give money to those who need help the most.

“I am investing in services right across the capital and doing everything within my power to tackle this issue. But the government also needs to play its part by providing additional funding so that we can boost much-needed services in London, and by tackling the long-term causes of homelessness and rough sleeping.”

Hackney mayor Phil Glanville was also at St Mungo’s to chat to clients.

He said: “We’re committed to tackling all forms of homelessness, and we hope that the new permanent hub in Hackney will help NSNO build on their record of helping thousands of people off the streets, transforming even more lives across London.”