BuddyPress.org

I see the conflict. Your group forums URL is http://richard-dickinson.com/forums/ is the same as the URL of your SiteWide Forums which should not be the case.

A. If you want to keep the Forums slug for the group forums, then you have change slugs for the sitewide forums:
– Go to http://richard-dickinson.com/wp-admin/options-general.php?page=bbpress and change Archive Slugs (base) and Single Slugs. That is, change “Forums base” to somethig else like “Sitewide Forums” or “Discussions” and Save.

B. If you want the Forums slug for the Sitewide Forums, then you have to change the slug of the group forums:
– Go to Pages > All Pages and delete the “Forums” page. A notice will appear “.The following active BuddyPress Components do not have associated WordPress Pages: Discussion Forums.” Repair
– Click on “Repair” button and the BuddyPress > Pages panel will show up.
– On the “Discussion Forums” line, click on “New Page” button and the Page > Add New panel will show up on screen. This is where you’ll place the title for your group forums
– Type in e.g. Group Forums and click on Publish.
– Click on the “Repair” button and the BuddyPress > Pages panel will show up again. This time, in the “Discussion Forums” line, select the “Group Forums” page you recently created then click on Save.
– To check if your group forums are working with the new slug, go to http://yoursite.com/group-forums/ per title of the new page you created for the group forums.

After all this re-run permalinks == wp-admin > Settings > Permalinks > Save.