The convicted former UBS trader Kweku Adoboli has been arrested and could be deported to Ghana in the next few days, he has said.

Adoboli was taken into custody after attending a regular reporting session at his local police station in Livingston. He is in a holding centre in Glasgow and has been informed that he is to be taken to Harmondsworth immigration removal centre near Heathrow. Adoboli fears the Home Office wants to put him on a private charter flight to Ghana.

He previously spent more than a month in Harmondsworth before being granted bail by an immigration judge and released to return to accommodation with friends in Scotland. Adoboli was ordered to report regularly to his local police station as part of his bail conditions, and was arrested on Monday.

Adoboli, 38, lost his most recent legal challenge when he sought permission in the immigration court for a judicial review of the refusal of his latest application to remain in the UK. This was not granted, but his legal team are understood to be preparing a new challenge to the court of appeal.

Speaking from the Glasgow holding centre, he said: “We want to keep fighting.”

Adoboli was jailed for seven years in 2012 after being found guilty of fraud that cost UBS $2.3bn (£1.8bn). He was released after serving half his sentence.

He was born in Ghana but left when he was four and has lived in the UK since he was 12.

Adoboli’s legal team argued that after he served his sentence for banking fraud, he had dedicated himself to public speaking and hosting workshops about improving probity in the finance sector, and warning people against making the kind of errors he did while working for UBS.

He has been working with the Forward Institute, which promotes responsible leadership in business and society, and evidence of this was submitted to the court.

Judge Ockelton, who heard his most recent application, said if Adoboli wanted to continue giving talks, he could do so via video link from Ghana.

