It appears that at around mid-day UK time our content processing services crashed due to an ongoing bug in the processing engine. I've got the service back online and we're working through the content backlog.
We are back fully online.
The site is now mostly back online however we seem to be seeing huge spikes in traffic which is significantly disrupting the site. We're working to get things back up and running but have limited capacity to scale up further than we already are.
In attempting to restore content processing it appears we have caused major disruption to the entire site. We're working to get things back up and running.