A JURY has heard there was no evidence of sexual activity between a murder defendant and the victim he claims sexually assaulted him.

David Kilcullen is accused of murdering 59-year-old Gerry Edwards and attempting to murder Chris Bevan, 57, at the couple's apartment in Page Heath Villas, Bickley, on March 3.

The 46-year-old, of The Avenue, Bickley, denies the charges, claiming he stabbed the couple in self-defence after they sexually assaulted him.

At the Old Bailey this afternoon prosecutor Peter Wright read a statement from forensic scientist Helen Myhill, who examined swabs taken from Mr Edwards’ body.

She said: “No DNA or semen which could be attributed to David Kilcullen was found on any of the items."

She added that it was possible for sexual activity to occur without DNA or semen traces being left, such as when a condom is worn.

Earlier the jury had heard police found a black sock containing traces of Kilcullen’s DNA at the scene of the attacks.

They heard the traces, which were on the inside of the sock, could have been left by Kilcullen wearing it on his foot or hand.

The jury also heard that blood from Mr Bevan was found spattered across the living room, hallway and kitchen.

Before this, the jury had seen the knife used to stab Mr Edwards and Mr Bevan, which police recovered from the living room of their flat.

Neither the blade nor the handle contained traces of Kilcullen’s DNA, the jury heard.

However, the jury was told the knife was made by the same manufacturer as one found in Kilcullen’s flat, and both types of knife can be bought in a set.

Mr Edwards was stabbed four times and died as a result of one of the wounds, which went through his sternum and into his heart.

Paramedics pronounced him dead at the scene of the attack.

Mr Bevan spent months in hospital in a critical condition after suffering multiple stab wounds to his scalp, face and chest, and has still not made a full recovery.

The trial continues.