Well, my "little" brother is usually Silver Command at Millwall and travels with the away boys occasionally. If they were coming down he would have told me. And our Mum.
(Yes he, and others, did come down for us v Millwall and we had a happy time in the Guide Dog the night before the game)
He's ex St Marks and Bellemoor so on the wider question of police intelligence, I leave that to individual interpretation.