I am in the UK.
Yes, they contacted me via email with a Cease and Desist letter attached in PDF format.
They certainly mean business.
I think a war on bitcoin gambling has begun.
I would like to see what happens incase one of the gambling sites(not in UK) does not agree to their request. I really doubt they will do anything, but would still be nice to see. If their threats work and are serious, I see US implementing a similar law soon.
I get a different impression. It seems to me they are out in force and such a 'criminal' would be attacked at the jugular.