The jury in the trial of a chef accused of killing four men with a date-rape drug has retired to consider a verdict.

Stephen Port, 41, is alleged to have spiked their drinks after meeting them on gay dating apps including Grindr.

Port, from east London, is said to have drugged the young men with GHB - known as "liquid ecstasy" - so he could fulfil his sexual fetishes of having sex with their unconscious bodies.

The alleged victims include former Dartford Grammar pupil Daniel Whitworth, 21, from Gravesend.

He died of a drug overdose, along with Anthony Walgate, 23, Gabriel Kovari, 22, and Jack Taylor, 25, it was alleged.

The trial at the Old Bailey heard Port tried to pin the blame for one murder on Mr Whitworth by planting a sham suicide note.

Mr Whitworth's body was found by dog walker Barbara Denham dumped in a churchyard near Port's flat in Barking, east London on September 20 2014 - just three weeks after she found Mr Kovari's body in the same spot.

Police found a bottle of GBL, the liquid of GHB, and Mr Whitworth was clutching an apparent suicide note in his left hand, the court heard.

Detectives initially accepted the apparent suicide note at face value, and did not investigate further - but later analysis by a handwriting expert revealed it as a fake.

Port denies 29 charges against a total of 12 young men including murder, manslaughter, rape and sexual assault between 2012 and 2015.