A 73-year-old former teacher at a top boys school, jailed last year for abusing three young boys has admitted sexually abusing two more from the school.

Peter Clulow taught music at Haberdashers' Aske's Boys School in Elstree before resigning in the mid 1980s after two teenage boys made an allegation he molested them.

Clulow continued to teach privately and took the opportunity to prey on young boys during maths lessons at his home and on sailing trips aboard his yacht.

In May last year Clulow, then of The Lawns, Hemel Hempstead was jailed for 27 months, after pleading guilty to five counts of indecent assault on a male, inciting a child into sexual activity and 16 counts of possession of indecent images of children, including one described by the sentencing judge as a "particularly disturbing image of a young child".

Clulow, now of Gorseways, Hatfield, has already been released from the sentence.

At St Albans Crown Court yesterday (Thursday) Clulow pleaded guilty to indecent assault of two further Habs pupils in the late 1970s and mid 1980s.

The two men, one now a GP, came forward after coverage of the court case in the press last year.

David Chrimes, prosecuting, said Clulow was a music teacher at Haberdashers' in the late 1970s when he invited a second-year boy, aged about 12, round to his house.

He was invited upstairs to Clulow's bedroom to go under a sunlamp.

The boy was laid on his front and while administering a massage Clulow climbed on top of him, and the boy felt Clulow press his genitals against his buttocks.

The other victim told police he thought he was about 14 at the time Clulow lured him to his yacht in the Solent and molested him.

However, a log from the defendant's boat showed the offence took place in 1985, when he would have been aged 17.

When the boy fell asleep in his bunk he woke to find Clulow masturbating him leaving him in a "state of shock".

During police interviews Clulow made partial admissions to the offences.

He said he could remember the incidents but not the improper sexual conduct with the Haberdashers' pupils.

And before admitting the offences in court Clulow asked for what is known as a Goodyear indication - where the type of sentence is canvassed from the judge before a guilty plea is entered.

As the offences were committed during the same time period as those Clulow had been jailed for, the court said the pensioner would not be imprisoned immediately.

Judge John Plumstead said they "crossed the custody threshold" and imposed a nine-month prison sentence, suspended for two years.

As further punishment Judge Plumstead made a "prohibited activity requirement" that prevents Clulow sailing his boat this summer.

The order states he is "not to go out on any pleasure craft for three months".

Prosecution costs of £580 were awarded.