Feel free to contact me anytime if would like to talk science, invite me for dinner, a beer, whatever. The first e-mail address is in principle my work address, the last is the private one, but in practice I check all of them regularly so just write to the address you prefer.
If you prefer to write encrypted e-mails, you can find my public key here.
You are also welcome to contact me by phone - my office number is +44 (1223) 762 983, and my mobile number +44 (79) 061 585 33 (in the UK).
Looking forward to hearing from you! Cheers, Andreas