I checked the DNS records in our account that were imported when the domain was added and they match the current nameserver records. Cloudflares’ HTTP proxy is disabled.
However, when pinged we were seeing an IP of 188.8.131.52 which I assume is a Cloudflare proxy IP address?
For now, I have returned to the old nameservers but would still like to switch over.
Any ideas? My only one is that somebody else has a Cloudflare account with the same two nameservers as us and had it set up before hand.