[Note: This is a Romanian language interview, but can be translated with Google or other services.]
La Garde de Nuit at Worldcon, and sat down for an interview with them. But they managed to have a contingent at the London Waterstones event, and arranged a brief sit down with George afterward. Not only is their event report the most detailed they've seen, they also had some fun moments with George afterwards.]
https://www.lagardedenuit.com/an-evening-with-george-r-r-martin-in-london/