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Looks like a "parked" domain with ads on it.

Some web hosting companies put up search pages with ads hoping to make some cash on not used domains.

Hello,

You can use the hreflang attribute to specify alternative language and url.

<link rel="alternate" hreflang="x-default" href="http://www.example.com/" />
<link rel="alternate" hreflang="en-gb" href="http://en-gb.example.com/page.html" />
<link rel="alternate" hreflang="en-us" href="http://en-us.example.com/page.html" />
<link rel="alternate" hreflang="en" href="http://en.example.com/page.html" />
<link rel="alternate" hreflang="de" href="http://de.example.com/seite.html" />

To learn more about this http://support.google.com/webmasters/bin/answer.py?hl=en&answer=189077

Hello,

Do you get traffic from more than one country? If so, are you checking your rankings in each Google? Are you searching depersonalized?

The last thing, the number of searches does vary, it could just be that there are less searches for your keywords at the moment. Check with google trends.

Hello,

I don't understand why you redirected your index page to the "about us" page, Don't you want your home page to start at www.towerhousetraining.co.uk? Like having a short intro there and where people can read more by then clicking "about us".

Canonical urls are used on pages with very similar content. You basically tell the search engines what page you wishes to rank (of the similar ones).