Hi Rob,
Couple of picky things from me to start with - and please bear in mind this is just my opinion. It 'aint necessarily right!
"Welcome to the new & improved interactive website/blog of Rob Richards Photography". I would remove "new & improved". Not sure what you mean by "interactive" - unless it's the social bookmarking buttons! Keep your welcome simple.
I'd also make your mind up whether it's a blog or a website rather than the "\". It just looks a bit clumsy to me.
Also, your logo doesn't look very professional to me. It seems a bit blurred and "hand-drawn".
I think the blog idea is great. It adds content to your site (helping with SEO) and allows clients to get to know a bit more about you. Consider articles around recent client work you've done. "Last week I went to a wedding in Royston Vasey for Edward & Tubbs. Here are some photographs from the day" (for example) adds keyword related unique content (wedding, photograph, yourlocation) that relates to the sort of work you want to be getting. You don't need to put a ton of photos up, or even write copious amounts of web copy, just a short paragraph and a couple of images would do wonders. Don't forget to keyword your images too (if the blogging software allows it)
I think the site itself is simple and easy to navigate. I think you need to get a gallery/portfolio sorted through, because linking to Flickr doesn't look very professional.
To be honest, overall, it looks fine to me, if a little rough around the edges (from using a simple template I guess). A bit of fine tuning could make the difference.
And that's my tuppence!
-Ian.
P.S. As to Flash... It can look "flashy"
But I personally judge a photographer on their images, not their cool web skillz. No clue how the "general public" view it though.