It is London Poppy Day, and lots of celebrities have been supporting shown support by recording messages which have been played on buses and the tube across the capital.
You can hear the likes of Barbra Windsor, Brian blessed and Johanna Lumley to name a few.
Dan Friedman went to Covent Garden to meet the people behind the poppies, and to find out how donations will make a change..
As celebrities recorded messages to be play across public transport in London today, we decide to put our panels ears to the test.
See if you can guess the mystery voices.