Tom Felton
Curtis Brown Group Ltd.
Haymarket House
5th Floor
28-29 Haymarket
London SW1Y 4SP
UK
That is apparently his fanmail address and if you have twitter and want to talk to him, his username is TomFelton
Tash x
A close second to an email address is following Tom on twitter.com. Go to link and follow him! His updates are always informative and entertaining! Also, please vote for Tom for Mr. Twitter universe at link