I flew into Elvington on saturday. From several miles away it was evident that the airfield wasn't presenting it's usual picture of a huge, empty runway with an equally huge, empty hardstanding. The large number of marqees, display and visiting aircraft and numerous parked cars etc gave me just the tiniest clue that something was going on. Notam read or not. A quick call on 119.625 would have confimed it to anyone intending to practice aeros. They had the same view as I did. This wasn't the usual fly-through of a notammed event. And this guy did it twice!, departing to the west after the first session then turning back for the second. No excuse. End of story.