The 83-year-old — who can’t be named for legal reasons — attended a sexual offences office in Cape Town with his lawyer on Monday morning.

He is due to appear at the city's Wynberg Magistrates Court later.

The man, known in a BBC documentary as "Edgar", taught at Fettes College and Edinburgh Academy in the Scottish capital in the 1960s and 1970s.

The BBC presenter Nicky Campbell is one of several former pupils who have made allegations against "Edgar", who is fighting extradition from South Africa to the UK.

"Edgar" admitted abusing young boys while teaching in Scotland, according to court documents seen by the BBC.

His legal team now insists that he denies the allegations.

He also denies molesting students after moving to South Africa to teach at a prestigious boys school in Cape Town.

The man is subject to an order at the Scottish Child Abuse Inquiry preventing his identification.

BBC presenter Nicky Campbell - who has been fighting for Edgar’s extradition to the UK - said he witnessed incidents of both sexual and physical abuse at the Edinburgh Academy which had a “profound effect” on his life.

Edgar is fighting the extradition on compassionate grounds arguing that he is old, unwell, and remorseful.