Here is the info on that site sorry for the late response I missed this one.
I would say this company is probably legit as they have been in operation for a while.
But as always the decision is yours if you want to try them .
VAT No. 854 8985 58
Mr Benjamin J Fountain
Online Technologies Ltd
UK Limited Company, (Company number: 5372452)
20 Simpson Road
Easyspace Ltd t/a Easyspace Ltd
URL: Link hidden: Login to view
Registered on: 10-Mar-2004
Renewal date: 10-Mar-2008
Last updated: 16-Jun-2006
Registered until renewal date.
WHOIS lookup made at 02 08-Feb-2007