Rich.
I would add a health and safety section. A good about us page should be there.
Yes the wording needs tidying up a bit here and there but overall I really like the site. It looks very pro and will be a great asset to your business.
Guys... Richy has stated that he will add his own pics. I have seen the ones with soap all over the windows before but they will be replaced.
I would also get a landline number on there ASAP.
I don't know about search engine optimisation either.. I haven't looked at the code.. not that I would really understand it anyway

Andrew