All I get is some news page, and even the ŁUK" tab does not give me Duxford
It was a live feed from Duxford and I watched for 90 mins which included couple of Vampires / Catalina / 14 Spitfires and then to close the show Red Arrows.
Put it up soon as I saw it, as figured some may be online, think you just missed the end of it.
Not sure if there will be a recording but it was excellent.