Alarm bell ringing number 1 in my head:
There's no postal contact address on that website, which is illegal for UK-based internet traders.
Alarm bell number 2:
There's no phone number. It's not a legal requirement but any responsible trader would normally show one.
However the person registering the domain name has, it seems, at least met with the requirement to reveal his identity here:
http://www.nominet.org.uk/whois/lookup?query=mrtrader.co.uk
Try phoning him on 020-812-39951, which appears to be his number at KW Imports (which seems to be his home address anyway):
http://www.hiwtc.com/company/1693100/contact.htm
Chris