A judge who controversially permitted a knife-wielding drug dealer to remain in Britain was once on the board of a pro-asylum charity. 

Fiona Beach found that Christian Quadjovie, 26, was not a threat to the public despite a string of convictions including for sexual assault, carrying a knife and repeat drug offences. 

The French-born criminal has spent a total of 963 days in prison since arriving in the UK in 2009 at the age of ten. 

But he was granted a reprieve by the judge, who is a former director at Asylum Aid and represented migrants for free on behalf of the Bail for Immigration Detainees charity, the Sun on Sunday reported. 

The judgement has since been overturned after Government lawyers claimed it was ‘made against the weight of evidence.’ 

And shadow justice secretary Robert Jenrick has made a formal request to the Judicial Conduct Investigations Office to investigate whether Judge Beach, 54, had declared her previous roles. 

He said that the judge’s apparent conflict of interest undermined confidence in the courts. 

‘This is the latest example of an immigration judge with open borders views,’ he told the Sun on Sunday. 

‘The similarity between her decisions and the political views she has broadcast totally undermines confidence in the system. Judges must be independent.’ 

Judge Beach was listed in the 2007 annual report from Bail in Immigration among the barristers who had volunteered their time to represent its clients in court. 

And records show she was a director of Asylum Aid between September 2004 and February 2007. 

Judge Beach first heard Quadjovie’s case last April. 

He had first been convicted aged just 12 after sexually assaulting a girl under 13, then was given a nine-month referral order for carrying a knife in public in 2016. 

Later that same year he was convicted of drug offences, was detained for 30 months then caught with more drugs after he was released. 

The Home Office attempted to deport Quadjovie but he argued that he would not be able to reintegrate in France. 

A judiciary spokesman said all judges took an oath to remain impartial. 

They added: ‘In each case, judges make decisions based on the evidence and arguments presented, and apply the law as it stands.’