A man has been found guilty of plotting with a police constable to kidnap a bank manager from his home.
Richmond Darko, 25, conspired with Pc Mesut Karakas and three others to kidnap the Lloyds TSB manager in 2009.
Former Met officer Karakas, 25, had already pleaded guilty to conspiracy to kidnap and misconduct in a public office and assault.
The plot involved staking out the bank manager's home but the gang of five were arrested before he was kidnapped.
Blackfriars Crown Court heard anti-corruption officers made secret recordings in which gang members were heard discussing how the victim would be questioned to get his money.
The jury heard they were found with a list of names believed to be other potential targets, a stolen van, balaclavas and cable ties.
The five men planned to stage a roadworks scene near the bank manager's home as a distraction for the kidnap.
Karakas, 25, of Leytonstone, east London; Jamie Lowe, 25, of Clapton, east London; Ijah Rowe, 24, of Leyton, east London; and Gokhan Kuru, 24, of Finsbury Park, north London, all pleaded guilty to conspiracy to kidnap between August and October last year.
Darko, Karakas, Lowe and Rowe all pleaded guilty to assault, which took place in July last year in north London on a man in Chapel Market in north London.
Lowe also pleaded guilty to perverting the course of justice.
Karakas was dismissed from the Metropolitan Police in February 2010.
The five men will all be sentenced on 22 October.