Hi there,
Sorry about the delay in replying. Our UK servers are using DNS from our server providers, as this is the most secure as well as best at protecting our users privacy. Sadly, this comes with some drawbacks such as this case. We can try and contact the server providers however not sure if they can do anything.
An alternative would be using another DNS service but something like Google DNS / OpenDNS wouldn't be as secure for our users privacy.