How Will I Know Whitney Houston
As paramedics prepare for the busiest party night of any Christmas season to date, booze buses are heading onto London's streets tonight.
With thousands of office parties the ambulance service has even set up a temporary alcohol recovery centre in Soho to treat those who've had too much on what's known as Black Friday.
The idea is to take the pressure off A&E departments across London.
If you are heading out the advice is have something to eat, drink lots of water, wrap up and know how you're getting home.