The killer of Sonia Burgess, a trans human rights lawyer who was pushed to her death under a Tube train in London last year, has been convicted of manslaughter.

Senthooran Kanagasingham, 35, of Cricklewood, admitted manslaughter on the grounds of diminished responsibility at the Old Bailey.

Sonia Burgess, 63, who was known professionally as David, died at Kings Cross station last October when Kanagasingham pushed her from the platform.

On the day of her death, Ms Burgess had accompanied Mr Kanagasingham to a GP appointment, where she had raised concerns about his mental health.

The court heard that Ms Burgess, who allowed the defendant to visit her flat to shower and discuss personal problems, feared that Mr Kanagasingham was becoming psychotic.

Eyewitnesses said Kanagasingham looked “calm”, “blank” and “empty” after pushing Burgess under the train, and when confronted by fellow commuters, said: “I’m guilty, I’m guilty, I surrender”.

A note was found in his rucksack which said he was “broke, depressed and suffering from gender dysphoria”.

He had been known at the time as Nina, but according to reports wished to be treated as male.

Kanagasingham will face a prison sentence for the crime, the maximum sentence for which is life imprisonment.