The capacity for the Euros for all the grounds will typically be lower than it is for PL because UEFA requires more advertising space, often covers front rows at the sides in banners, and specify greater separation of opposing fans. The official Euro 2028 website has capacity for Villa at 48k which assumes the expansion to 50/51k due to complete in 2027 is delivered on time. Everton, SJP, Aviva, listed at a rounded 50k each. Hampden 51k, City 58k (after expansion to 60/61k), Spurs 60k, Cardiff 73k, Wembley 86k. These are holding estimates and will be updated when detailed seating plans are agreed nearer the tournament.