The Italian newspaper La Repubblica has compared the scenes to "urban warfare". The violence is believed to have taken place at the Drunken Ship pub - images on La Repubblica's website appear to reveal the damage.
The Lazio fans were reportedly armed with knives, baseball bats, belts and knuckle dusters and they went on to "destroy" the venue. One witness told the paper: "We feared the worst."
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Jacob Rees-Mogg has played down speculation he harbours ambitions to become Prime Minister after he moved nearer to Parliament.
David Gauke said those who take cocaine at dinner parties are responsible for fuelling the violence on city streets.
Largely fine and dry across Scotland and Northern Ireland.