Find out how the HIV epidemic has changed over the past quarter of a century and how NAT (National AIDS Trust) has made a difference to the lives of people living with HIV in their 25 years.
Gok Wan tells us why its important to #RibbonUp this World AIDS Day
On this page you can also view video messages for World AIDS Day 2013 from David Cameron, Nick Clegg and Ed Miliband.
Click on the videos to hear the Prime Minister and party leaders pledge their ongoing support for people living with HIV and commitment to tackling HIV in the UK and abroad.
David Cameron - Prime Minister and Conservative Party Leader - 2013 message
Nick Clegg - Deputy Prime Minister and Liberal Democrat Party Leader - 2013 message
Ed Miliband - Leader of the Labour Party - 2013 message