England fan Garry Mann, who was convicted of rioting at Euro 2004 faces being sent back to Portugal to serve a two-year jail term, despite one of the country's most senior judges describing his case as a "serious injustice".

Giving a ruling at the High Court on Tuesday, Lord Justice Moses said Mr Mann's lawyers, in Portugal and in the UK, had twice failed to appeal various aspects of the case when they should have done.

But the judge ruled the High Court had no jurisdiction to interfere with an earlier decision, made at The City of Westminster Magistrates' Court, to extradite Mr Mann to the continent.

Lawyers for Garry Mann, of Gordon Square, Faversham, argued that his trial just 24 hours after the Algarve riot was a "flagrant denial of justice". A British police officer present at the court in Albufeira has since described proceedings there as a farce.

However, Lord Justice Moses, sitting with Mr Justice Hickinbottom, ruled that the High Court's hands were tied by the law and they could not intervene in the case.

The judge said he could not pass comment on whether or not Mr Mann received a fair trial, as the Portuguese authorities insist that they did nothing wrong.