Well, that's Imgur gone for UK users.
Thanks to the Governments online policy and recent laws, Imgur has basically shut out all UK access to the ir image hosting as of today. The government seeks to blame and hold responsible any party hosting unacceptable images, in whatever form. So, in order to avoid having to monitor and check every single piece of content that might be uploaded to verify it meets UK law and doesn;t leave them liable for legal actions, they have simply shut the UK off.
Anyone using it as a host for images for build threads etc. like myself, now cannot. Expect other free image hosting sites to follow suit, as they don't provide the level of nanny-state protectiveness the UK seems determined to have.