Philip French, who is a special advisor to the Culture secretary, Andy Burnham MP said: "I've been watching Portsmouth since I was 11 years old.
"There's too many happy and sad and mixed emotions and yesterday was all about the perfect day and my god, what a day, it was just amazing and the best day of my life, just incredible.
"And its all about being a football supporter and I think the cup final's shown two teams and two sets of fans who are really really genuine supporters who love their clubs."
On Saturday some 25,000 Pompey fans were among the 90,000 people at London's Wembley Stadium who saw Nwankwo Kanu score Saturday's decisive goal.
Another 60,000 - three times as many as expected - watched on a big screen on Southsea Common.
Meanwhile, thousands of people gathered in Cardiff Bay to welcome home the defeated Cardiff City players.
The players, who had reached the club's first FA Cup final since 1927, arrived via boat from Penarth.
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