As you probably noticed the site went down yesterday at around 5pm GMT.
A few hours earlier we experienced another major Distributed Denial of Service (DDoS) attack, but this time the perpetrators managed to get past Cloudflare and other defences and attack the site directly.
We therefore had no choice but to change the site IP. The site then effectively became inaccessible until the new IP propagated. Which it now has.
We seem to be getting more than our share of disruption lately, but, with some restructuring and even more security, we’re hopeful this particular issue won’t happen again.
ADDENDUM: If you’re still finding it hard to access the full site you need to flush your browser cache and/or delete browsing history. This should solve the problem completely.