Web forwarding Watch
Here are the options:
Framed web-forwarding to a single page
It could just point to a directory (URL ends with /) in which case the files displayed would depend on the webserver 'directory index' settings.
The destination URL will be replaced by edexcelbiology.co.uk.
Really you don't want to use any forwarding, you want to change the DNS on your domain name to work with your existing hosting rather than use fowarding which is just used by cowboy or low rent sites.
Once you have those settings you just put them in using the config page for your domain.
If you're planning on using the hosting I gave you then PM me for the nameservers lol