The Metropolitan Police is to pay £425,000 to a woman whose child was fathered by a former Exeter University academic who she did not know was an undercover police officer.
The payment comes after a legal battle with women who say they were duped into relationships with officers who were spying on them.
One of its key officers, former Special Branch detective Bob Lambert, used the pseudonym Bob Robinson, and was tasked with infiltrating the Animal Liberation Front.
Bob Lambert became co-director at the European Muslim Research Centre at Exeter university after leaving the Metropolitan Police.
The university says he left in August 2011, two months before he was publicly named as an undercover police officer who infiltrated protest groups.
Mr Lambert posed as an animal rights activist. He had a long-term relationship with a group member he met in 1984 and fathered a child with her before later disappearing.
During that operation in the mid 1980s, he formed a relationship with a 22-year-old activist called Jacqui - even though he was already married with children. In 1985 she gave birth - but when the boy was two years old, the father vanished.
Jacqui only discovered the real identity of her son's father in 2012 after he had been outed by other campaigners.
Scotland Yard had refused to confirm or deny whether Bob Lambert was an SDS operative, despite his own admissions to journalists, until it was forced to change its position in August.
After the end of his deployment in 1988, he became a detective superintendent in the SDS and supervised other police spies including whistleblower Peter Francis.
Speaking to BBC News and the Guardian newspaper, Jacqui said that the Metropolitan Police's refusal to admit the truth had contributed to a mental breakdown requiring treatment at a clinic.
She said that she would have rather have had less compensation and more truth.
She told the BBC: "The legal case is finished but there is no closure for me. There is the money, but there is no admission by the police that what they did was wrong, there is no meaningful apology and most importantly there are no answers.
"I don't know why I was singled out by the police to be duped into an intimate sexual relationship with Bob Lambert. I don't know if he was paid overtime to be with me during the 14 hours of labour I went through giving birth to our son. I feel violated."
