SCOTTISH police have discussed security arrangements for the Olympic torch relay with their counterparts in Northern Ireland after scuffles broke out when the procession made its way through Londonderry.

Dissident Republican protesters blocked the torch's planned route through the city and it was forced to divert to a different road.

A 51-year-old man is to appear in court later this month, charged with assault on police and disorderly behavior.

The torch is due to arrive at Stranraer on Friday, before making its way to Glasgow to start off a week-long relay round Scotland.

Last night, a spokeswoman for Strathclyde Police said plans for the relay had not changed, but added that lessons would be learned from Tuesday's incident. She said: "There's no change to the planning principle for the reception of the Olympic torch at this stage."

Politicians in Northern Ireland condemned the trouble that erupted in Londonderry, saying that the protesters were "divorced from reality".

Sinn Fein Member of the Legislative Assembly Raymond McCartney said: "We have to remain focused. This city is moving on. We have to continue to isolate these people. They have to be seen for what they are, divorced from reality and don't listen to the popular will of the people."

SDLP MP Mark Durkan said dissident elements had "seized an opportunity to abuse what was a good event for the city".

He added: "You don't need to engage in these negative tactics, you don't need to be attacking the city, and there's nothing you're going to do for Ireland by doing bad things in Derry."

l Sir Paul McCartney has confirmed he will close the opening ceremony of the 2012 Olympics in London.

A performance by the former Beatle has long been rumoured, and in January he disclosed he was in talks about taking part.

He ended the speculation saying: "I've been booked," adding that he would be "closing the opening".