Birmingham manager Alex McLeish said scenes of fan violence following his side's Carling Cup quarter-final win over Aston Villa threatened to bring English football "back to the Dark Ages" - but does not think it will affect Thursday's World Cup vote.
Hundreds of fans poured on to the pitch at St Andrew's following Birmingham's 2-1 win over their fierce rivals, with flares being thrown into the away end and chairs apparently ripped up and thrown back towards the pitch.
Dozens of additional police had been hired for the match but they struggled to keep the sheer numbers of rioting fans in check.
It is hardly the image of English football being sold to FIFA in Zurich by Prince William, David Cameron and David Beckham but, although McLeish was upset to see it, he does not feel it will harm England's 2018 bid when voting commences.
"I'm disappointed by that side of things," he told Sky Sports 1. "Fans shouldn't come on to the pitch at any time. It soured it a bit for us.
"I don't think that will affect the World Cup bid, I'm sure that's already decided, and let's hope England gets it because it deserves it. It doesn't look good though, when you see fans running on the pitch like that and carrying on. It takes us back to the Dark Ages."