Two sisters who tended the wounds of one of the 21/7 failed suicide bombers and helped him to escape a police manhunt will be given long jail sentences at the Old Bailey today.

Yeshi Girma, 31, who was married to the bomber Hussein Osman, and her sister Mulu, 24, a model, wept yesterday as a jury found them guilty of helping him and withholding information about the attacks.

Esayas Girma, 22, their brother, was also found guilty while Mohamed Kabashi, 25, Mulu’s former lover, admitted failing to disclose information and assisting an offender.

Their convictions came after the third case connected to the events of July 21, 2005, when four men tried to explode rucksack bombs on three Tube trains and a bus in London.

The attacks took place two weeks after 52 people were killed and more than 770 injured by suicide bombers on the London transport network.

Osman called Yeshi, the mother of his three children, as he fled from a Tube train at Shepherds Bush, West London, after his rucksack bomb failed to explode. He caught a bus to Wandsworth where she and her brother picked him up in a car and drove to their sister’s flat in Brighton.

Their action enabled Osman to evade the extensive police operation to find the bombers.

Mulu claimed that her sister had turned up at her home unexpectedly and that she thought Osman’s injuries – burns from the hydrogen peroxide mixture that leaked from the partially exploded device – had been sustained in a fight.

She treated his injuries, disposed of the clothing he had been wearing in woodland and transferred him to another “safe house” in Brighton.

Yeshi and Esayas Girma, together with Kabashi, returned to London on July 21 and attempted to get rid of evidence that might incriminate Osman.

After two days in Brighton, Osman travelled back to London then took a Eurostar train to France and went on to his brother’s home in Rome, where he was eventually arrested eight days after the attempted bombings.

When police questioned Yeshi, she lied about her husband’s identity and claimed that they were estranged. However, searches found evidence of his recent presence at her home.

Despite her claims to the contrary, Yeshi – a convert to Islam – had been fully aware of her husband’s radicalism, allowing him to take their son on a camping weekend in the Lake District with a group of extremists.

On the night before the attack, she took Osman’s collection of extremist material across London as a bequest to one of his friends. Her fingerprints were found on cassette recordings of sermons by Abu Hamza al-Masri.

Osman, 29, Ibrahim, 30, Yassin Omar 27, and Ramzi Mohammed, 26, were convicted last year of conspiracy to murder and jailed for life.

Two other plotters have been jailed after admitting offences linked to the bomb attacks and, in February, five men were sentenced to between seven and seventeen years for providing the gang with safe houses, food, clothes and mobile phones.

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