google webmaster tools

I guys I got a problem here I submiited a site to google via google webmaster tools and although when i type in the full address it comes up but when i submit the sitemap xml its says that the URL is not valid ???

heres the link of the site www.gloucesterplasteringspecialists.co.uk and heres the link to the page on webmastertools

https://www.google.com/webmasters/to...=1&CARD_TAB=-1

help me please thanks