Kevin Miles, chief executive of the Football Supporters' Association, said:
"We unreservedly condemn the anti-social behaviour and violent disorder by a number of England “fans” in Porto last night. We do not want to see that behaviour at all.
"This is exactly the type of incident that Football Banning Orders (FBO) were made for and we're sure the authorities will be seeking to identify perpetrators.
"While the UK police don't have powers of arrest in Portugal they can apply for FBOs which stop these people getting into UK stadiums or following England away.
"The most galling aspect of these incidents - which most England fans didn’t witness, let alone condone - is that the rest of us will all suffer as a consequence of the reputation perpetuated by this minority of idiots.
"The FSA and its members reject violence - we don't want these people at football matches."