Charlie Harrison is the UK national champion for 4x4x4 blindfolded and at UK championships he also solved my giant 35CM 3x3x3 blindfolded, he is still the only person I have ever witnessed successfully do it, other good blindsolvers have tried but no one else has succeeded. At Edinburgh I wanted to get him to do it again and get it filmed but unfortunately he had a pop in the middle and put the edge back in the wrong way round. In reality, we can basically count this as a success as it was incredibly close and he did everything else correctly!