You can contact Sophia Myles by writing through her agent. This is the address:
Sophia Myles
c/o Lindy King
United Agents
12-26 Lexington Street
London
W1F OLE
United Kingdom
Note
Judging by the amount of visitors this site has I suppose Sophia Myles is getting more and more fanmail. Therefore, if you wish to receive an answer or an autograph make sure you send a self-adressed and sufficiently stamped envelope along. If you live outside of the UK make sure to enclose International Reply Coupons. For more help concerning writing a celebrity visit FanMail. I’m sure Sophia Myles is appreciating us following these guidelines 🙂