At times of extreme weather there are still thousands of homeless people on the streets in dangerous conditions, here is what you can do if you see someone.

Temperatures have plummeted this week in south east London, which doesn't only mean it's time to turn the heating on.

StreetLink is a non-profit organisation run by Homeless Link, the national membership charity for homelessness agencies, in partnership with St Mungo’s, a major provider of homelessness services

Sleeping rough is dangerous enough without the bad weather, but when you add freezing temperatures it becomes a greater concern, it becomes life or death.

When temperatures drop to near freezing, Local Authorities have a duty to offer emergency shelter to all those sleeping rough, so this is how you can help.

StreetLink is asking people to download the app onto their phones, from here you can send an alert if you are concerned for a rough sleepers safety.

From here the public and local outreach teams can track them down and take them to warmth, safety and shelter.

Alternatively you can call 0300 500 0914 or visit streetlink.org.uk.