The cache is what Google has stored in it's index about your site. If you click
here you will see what Google has stored about my site starting with the site title and description. Underneath are various heading including a link to the cache where you will see how Google views my site.
Now click on
this link and you will see the same thing for your site. The title is shown as PJ Facilities but there is no description as you don't have one in your website coding which is a shame as Google places great store on the "description"
Click on the "Show Google's cache of
www.pjfacilities.co.uk/ " link and you will come up with a blank page. Whilst I know a bit about search engine optimisation I know next to nothing about website coding but I think that your problem is that the domain name is pointing to a website that is hosted elsewhere and Google's spider can't see the text.
Perhaps one of our many IT experts will give you chapter and verse on the exact nature of the problem and the easiest way of curing it.