Thanks to Rechercheart, we now have another video of Tom leaving King’s Cross station on 26 May. In her notes on the video where she was able to catch a glimpse of practically the entire cast, she mentions it was later that evening when Daniel Radcliffe, David Heyman, Emma Watson, and Bonnie Wright accepted awards for “Harry Potter and the Half-Blood Prince” at the National Movie Awards.
You can read her notes on the video here at the source.



