I wrote Jon [Walklin] a nice email basically asking him if he is actually Deprived, and if not, if he knows another 'Jon W' in the UK computer forensics field who might be.
Overnight (my time) I received an email from Deprived. He says he's not Jon Walklin, and doesn't know Jon Walklin.
So you sent an email to Jon Walklin and got an unprompted reply to the same question from Deprived? That seems suspicious.
Any reply from Jon Walklin yet?
Was there any data of interest in the email headers on the email you got from Deprived? An IP address?