Pizzas galore!

During that time, Rathnayaka warned them not to tell anyone about their plight, especially the British embassy, lawyers, friends, family or the press.

However, on April 27 they sneaked out of the hotel and found their way to the embassy, where they met Kate Dufall, the pro-consul.

According to the couple, she told them the embassy could not interfere with the Thai legal system and put them in contact with Prachaya Vijitpokin, a lawyer.

Vijitpokin and a colleague, Kittamert Engchountada, of the Lawyers Association of Thailand, urged them to stay in the country to fight the case and have since assembled a dossier for potential prosecutions.

However, Ingram said the couple were so terrified by this stage that they decided to meet the demands for money, which they raised by bank transfers from Britain direct to Rathnayaka’s account. The Sunday Times has copies of the transactions.

Ingram and Xi were put on a British Airways flight to London early on Friday, May 1, having received their passports with official documents from prosecutors and police stating that no charges were to be brought against them.

They have said they are willing to return to Thailand and testify to try to stop the extortion if the government will guarantee their safety.

That could become a priority for Thailand, which has suffered a series of blows to its tourist industry through economic and political upheaval.

Inquiries last week established that Rathnayaka and his accomplices have continued preying on tourists who end up in police custody after being accused of theft from the airport duty-free shop. “I am just helping people,” he explained. “I don’t get paid to do this. All the embassies know me.”

Officials at the Danish embassy confirmed that a Danish woman fell into Rathnayaka’s hands about two weeks ago and was allowed to leave Thailand only after handing over more than £4,500.

When a Sunday Times journalist posing as a businessman in trouble contacted Rathnayaka last week, the first thing he said was: “If it’s a case, for example, of shoplifting at the airport duty-free then I can help. Bail is 100,000 baht (£1,800).” He later declined an interview, saying the Sri Lanka embassy — which employs him as an interpreter — had told him not to speak.

The Foreign Office said consular officials had offered to raise the case with the Thai authorities at the time but had been asked by the couple not to intervene.

A spokesman for King Power duty-free said the company had strict rules for evidence to be submitted to the police in shoplifting cases, but added: “We cannot control what happens after that.”

Additional Reporting: Andrew Chant

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