To answer to the question from bigmacca1: the cop I am in contact with for my case said they are looking daily at this forum and at SE23.com. I have forwarded them the comments posted on the sightings and descriptions given.

However it would be a good idea to call the police as soon as we think we see this mugger in the street. If the weather gets better in a week of so, he might change jacket and not wear a beanie anymore, who knows....

Thank you