"I didn't expect this incident would happen," Thaksin told reporters on a chartered plane as he headed from New York to London.
"I was prime minister when I came, and I was jobless on the way back," he told TNA, in his first remarks to reporters since the coup.
"I volunteer to work for the country," he reportedly said. "If they don't want me to do that, I won't."
|A newspaper vendor sells newspapers about Thailand's armed forces seizing power from Prime Minister Thaksin Shinawatra (AFP)|
"I was in contact with my family the entire time this was happening, and I was also in contact with the military," he told TNA.
Ousted Thai Prime Minister Thaksin Shinawatra was expected in London Wednesday for a "private" visit after the military coup in his homeland, amid deep uncertainty about the country's next step.
A Foreign Office spokeswoman in London told AFP: "He will be arriving later today. It will be a private visit. It's not in an official capacity. We haven't got details of who will be accompanying him."
Thaksin, who has property in London and whose daughter is reportedly a student at the London School of Economics, is a regular visitor to the British capital.