We've moved forum software as the vbulletin install we had was a bit aged and for reasons unknown was slightly broken. As it costs to upgrade vbulletin, we're using something else instead, which doesn't cost.
Downside is that any posts since the early hours of 1st September will not be here, as that was when the last automatic backup ran. I don't think there's many, and half of them were simply saying that the old forum was broken. Apologies if you've lost anything; you'll have to repost.
You may need to request a new password before logging in. See http://skyewheelnuts.co.uk/forum/index.php?action=reminder
Any problems with logging in, then assuming you've used the above link, received the email, and followed the email's instructions/link without any success, then the last thing to do is to clear your browser's cache and cookies; then follow the above link once more.