It is national coverage if it is on the BBC Boxing front page - they've put the local news stuff on a national platform. The BBC website gets something like 50 million unique users a month, about half of which are from outside the UK - so it's good exposure internationally as well. That is for the whole bbc.co.uk domain, so obviously I'm not saying Carl Froch just got 50 million people on it, but it gives an idea of the scale. It's good exposure.
No worries at all mate. I use the BBC Boxing site like I use The Sun or The Metro. It gives you a good topline of what is going on, with some good comment primarily aimed for people who "like" boxing. Then you hit ESB, Boxing News etc. for the in-depth stuff.