These guys have been around for a while. I first came across them as Mainstream Tech Ltd. I put a post on my blog and it got a lot of comments, so I set up a website to focus specifically on domain name scams (
www.domainscams.co.uk). We are trying to get Trading Standards to shut them down. If you have an experience, please post it on my site also, as TS are using it to build evidence.
Thanks.