A former teacher faces jail after being convicted of sexually abusing two vulnerable teenagers.

Jeff Morrell, 65, from Teddington, was found guilty of 12 offences of sexual assault, involving two boys aged 14 and 15.

Judge Martin Stephens warned him he could face jail at the Old Bailey last Tuesday.

The court was told Morrell abused the boys in the 1970s when he was head of year at a school in Stockwell and although one of the youngsters reported it to another teacher nothing was done.

Linda Strudwick, prosecuting, told the jury Morrell worked at the now closed school between 1973 and 1983 before becoming a taxi driver.

He was forced to resign following a disciplinary hearing into his relationship with another boy at the school.

Later in 1983 he was convicted of gross indecency with a "rent boy" and placed on a register of teachers who had committed sexual assaults.

The court heard Morrell visited one of the boys at home and also took him to his own home.

The jury was told the abuse, which only came to light when one of the victims told his family years later, continued in one case after the boy had left school.

Both victims told police they were kept behind for "detention" and were locked in Morrell's office.

Miss Strudwick said: "He used his position of authority and his proximity to schoolboys to target young boys who were vulnerable."

Morrell has been released on bail until his sentencing on August 24.