How do I extract a single site from a multisite install?

I have a website on web.dccf.org.uk that is part of a multisite install on dccf.org.uk that is sick. I need to move it to a single install on web.dccf.org.uk with a different host. I have a lot of plug-ins and I don't want to have to manually reinstall them and guess the correct configuration of them all.

Any ideas?