It looks like http://www.partsgateway.co.uk/ has serious security issues. Users are being spammed with fake invoices etc. If you have ever logged in there or given them your email address please be aware that your details may now be in the hands of scammers.
http://www.theregister.co.uk/2017/02/14/uk_car_parts_website_insecure_worries/
http://www.theregister.co.uk/2017/02/14/uk_car_parts_website_insecure_worries/