A jailed drug dealer was told by his girlfriend "you are going to do something you regret, calm down", just minutes before he ordered a "revenge attack" on a 25-year-old man who was murdered in Thamesmead, a court heard.

Steven Ngolo, 22, of Portmeadow Way in Abbey Wood, was serving time for dealing cannabis, and made secret calls on a Thameside Prison phone to those working for him, prosecutor Mark Fenhalls said.

Ngolo made dozens of calls in the 18 hours before Olamide Benedict Fasina, known as Ben or Trigger, was stabbed in broad daylight on October 14 at 2.05pm - in what Mr Fenhalls described as a "brutal" attack.

Recordings of the heated phone conversations, connected by Ngolo's sister, were played to the jury at the Old Bailey this afternoon (April 24).

Ngolo had a series of conversations with Louis Henry, 22, of Henwick Road, Alvin Ansah-Baaphy, 23, of Old Dover Road and Bliss Duodo, 22, of Edgington Road - who are all charged with Mr Fasina's murder - after being told a young drugs runner called James or "Kid" had been robbed.

Mr Fenhalls said the men can be heard naming Mr Fasina as the thief and Ngolo repeatedly tells the others to "burn that bridge".

In one conversation with Henry at 7.52pm on October 13, played to the court, Ngolo said of Trigger: "He's a p***y and he's stressed.

"Trust me, he's got problems.

"You have got to ring Dago (Duodo's street name) and that. If they don't do this for me."

In a later conversation, Mr Fenhalls said Henry reassures Ngolo others on the estate will not interfere with their revenge plot by saying: "They don't want no problems.

"That's why they're trying to be helpful and that fam, because they know they will get slain. They will get touched."

The suspects tracked Mr Fasina down that evening, and conspired to draw him out of the flat where he was hiding, the court heard.

In one phone conversation, Ngolo said: "Say f**k his mum or something. Say something to make him come out."

At around 2pm, multiple witnesses saw a group of men, at least one of whom was holding a knife, chasing another man across Wolvercote Road.

Emergency services found Mr Fasina collapsed in Hinksey Path alleyway at 2.09pm, after attending reports of a fight in the large estate known as The Square.

Mr Fenhalls said Mr Fasina had been stabbed in the stomach, arm and chest, penetrating the heart and died at the scene.

During a phone call at 3.42pm on October 14, just an hour and a half after the victim's death, Henry told Ngolo: "I think he is gone. He is no more," when asked about Mr Fasina.

Traces of Ansar-Baaphy's blood were found at the scene.

In addition to the murder charges, all four men are charged with conspiracy to cause GBH.

They deny the charges against them.

Henry, who prosecutors claim wielded the knife and stabbed Mr Fasina in the heart, pleads self defence.

Ansar-Baaphy denies participating in any stabbing attack.

Duodo claims he was not present at the attack, but came along shortly afterwards.

Ngolo accepts he was a part of the telephone calls but says he did not intend for the others to cause serious bodily harm to Mr Fasina.

The trial continues.