Hi Richard
I'm not a designer or SEO expert, so I guess that makes me number 3 on your list?
In which case, my response would be I really like the overall design and layout of your site BUT it looks far too grey and serious (personally, if I was looking for an IT company, I'd be espcially drawn to a more vibrant looking site as I'd - rightly or wrongly - assume that such a company would be able to explain their service/recommendations/actions etc., in non-geek speak to me (this would be top of my list of wants if I was employing such a company).
For me, your site looks far too monochrome and serious (i.e. connotations of big company targetting equally large companies). Considering your 'about' page details that you '
are' the business and therefore your clients are actually employing you as opposed to a faceless computer geek in a big company, I'd really want to see a more colourful, fun site which conveys more of your own personality.
Second point would be that admagic's advice is spot-on and I'd especially agree that you need a list of services/benefits to immediately stop someone like me pressing the back button (I had to click your services page to find out what you do as it's not at all obvious from your homepage - the 'thing' that most jumps out on your homepage is your name 'RG Bartlett IT services Ltd' but IT services to someone like me could mean anything really, couldn't it? I certainly wouldn't know it would encompass review, buying, installation & training. To be honest, I'd just think 'IT support', which is actually at the bottom of your list of services.
Finally, considering your testimonials page is the third link in a list of just 5 pages, I'd expect to see much more on here, to be honest. Maybe a case studies page from a range of different-sized client businesses would be more helpful in communicating what you do and how you do it.
Just read that back and it sounds quite negative, which I didn't mean it to be. I do like your site a lot - I especially like how easy it is to navigate to all the information from your homepage (without your homepage being too cluttered), but seeing as you've had such top advice from the experts here, I thought I'd give you some feedback from an ordinary browser. Hope it helps
Louise