Stigma, fear and complacency are the greatest obstacles to people seeking out their HIV status.
This is why Terrence Higgins Trust and the Mayor of London have taken this initiative to encourag those most at risk to take the HIV test.
Knowing your status can literally be a life saving action.
More top news
One of London's most iconic locations, Borough Market is marking its millennium with a year long celebration, starting this weekend.
YouTube superstar Alfie Deyes got a sense of how far he has come when thousands of fans descended on his latest book signing in London.
This weekend you can do take a look inside some of London's most iconic buildings.