Ms Abbotts, who was born in the West Midlands and lived in London, was described as a "socialite" who led a party lifestyle in London and told relatives she worked in IT.
She is thought to have been dead for about 12 hours before she was found, the court heard. He only "woke up" fully when he was arrested in hospital, claiming to have no idea what happened.
Naseem, of Amersham, Buckinghamshire, claimed he was acting in self-defence after Ms Abbotts tried to strangle him during a sex game. Naseem stayed in the flat for 12 hours after Ms Abbotts died and pretended to be unconscious when police broke down the door, the court heard.
Jurors at Lewes Crown Court heard Ms Abbotts suffered more than 13 wounds to crewe petite escorts head and 20 other injuries. In a statement read out after the trial, Ms Abbotts' family said: prostiute has had a tremendous impact on our personal and professional lives as we have not been able to meet commitments due to the level of stress and shock we have been experiencing.
He is due to be sentenced on Friday. He also said a "red mist" may have come over him.
Officers found Naseem lying motionless on the sofa with his eyes flickering, crawlry a paramedic was "sceptical" he was unconscious. But she lived a secret life as a high-class escort, who advertised her services online under the pseudonym Tilly Pexton.