The first papal visit to Scotland in almost 30 years looks a certainty today after Jim Murphy had an audience with Pope Benedict XVI at the Vatican accompanied by Cardinal Keith O’Brien.

The strongest likelihood is that His Holiness will visit Glasgow to celebrate an open-air Mass, possibly at Bellahouston Park, where the late Pope John Paul II did so in 1982, or at a football stadium, possibly either Celtic Park or Hampden Park. After Liverpool, Glasgow has the highest proportion of Roman Catholics in Britain.

It is also likely that the Pope will visit and celebrate Mass in Edinburgh, again either at a park or sports stadium. An address by the pontiff to the Scottish Parliament has also been suggested.

Unlike his predecessor’s visit, which was pastoral, Benedict XVI’s could be a full state visit with a stay at Buckingham Palace. The expectation is that it will take place next September and last three or four days.

The Scottish Secretary, who has been tasked by Prime Minister Gordon Brown to lead the UK Government’s liaison with the Vatican over the expected papal visit, told The Herald his meeting with His Holiness was an extraordinary personal moment.

“It was a very moving experience. It was a beautiful thing to be introduced to the Pope by Scotland’s cardinal at St Peter’s,” said Mr Murphy, who is a Roman Catholic.

During the few minutes the Secretary of State spoke to Pope Benedict, the subject of the papal visit to Britain was discussed.

“Myself and the cardinal arrived in Rome thinking a visit to Scotland was possible; we left thinking it was probable,” said Mr Murphy.

Diplomatic protocol means that it is up to the Vatican to officially confirm the visit and its details. An announcement is due before Christmas.

Pope Benedict is also expected to visit locations in England. Since the papal visit was mooted, the Vatican has been inundated with requests. Birmingham, Liverpool and Oxford are thought to be favourites.

Mr Murphy arrived with Cardinal O’Brien in Italy on Tuesday night. He attended mass at the 400-year-old Scottish college in Rome, which is the only place where Scottish priests are trained.

It was celebrated by the cardinal. Also present were Francis Campbell, the UK ambassador to Vatican City, and several seminarians.

Yesterday morning, after an interview with Vatican radio, Mr Murphy attended the Pope’s general weekly audience with pilgrims and then had a personal meeting with the Holy Father accompanied by Cardinal O’Brien.

Mr Murphy told the Pope how much the people of Britain would look forward to a papal visit and thanked him for the Church’s work on the issues of international development and climate change.

Afterwards, he had a 45-minute meeting with Archbishop Fernando Filoni, the Vatican’s Deputy Prime Minister, to discuss a papal visit to Britain. The talks continued over lunch with Vatican officials who deal with the Pope’s overseas visits.

In February, the PM formally invited Benedict XVI to Britain. A month later, Mr Murphy wrote to Mr Brown, saying a visit by the Pope to Scotland would be “appreciated by Scots”.

In 1982, Pope John Paul II made a six-day trip to Scotland; the mass at Bellahouston Park was attended by almost 300,000 people.

At the weekend, Benedict XVI was criticised over the way the Roman Catholic Church is trying to woo disaffected Anglicans to Rome.

Lord Carey, the former Archbishop of Canterbury, said it was unacceptable that the Pope and his Congregation for the Doctrine of the Faith had excluded Dr Rowan Williams, the current Archbishop of Canterbury, from discussions on the issue.