I'd just got home from school and put Sky Sports News on, they had a ticker underneath with a message to turn to Sky News for America Under Attack, or similar. Turned it on and saw footage of the second plane hitting with the opposite tower smouldering.
Footage of people jumping out of windows probably wouldn't be broadcast today in a live situation but I remember it vividly. A terrible thing to witness.
I visited Ground Zero in 2010 and I couldn't believe the actual size of the space, it seemed way smaller than I had imagined it to be. Cortland Street Subway was still closed after the collapse of the towers.
I was 15 and had my first away day the Saturday following 9/11 away at Derby, we won 3-2 when Savage won a penalty in the last minute.