A POLICEWOMAN from Kelvedon who provided life-saving first aid to fellow Tube passengers during the 7/7 bombings has warned people to “be alert” to terrorism as she retired 11 years on.

PC Liz Kenworthy was off-duty on her way to a conference when a suicide bomber detonated his device on the Circle Line train she was travelling on at Aldgate sta- tion in 2005.

She was in the fourth carriage, a short distance from the blast, and rushed towards the scene and administered first aid – using her corduroy Marks & Spencer jacket and a belt as makeshift tourniquets to help save two passengers’ lives.

The coroner at the inquests into the 52 people who died in the blasts paid tribute to PC Kenworthy’s courage and determination.

Recalling her actions, the Metropolitan Police officer said her years of police and basic first aid training compelled her to act.

PC Kenworthy, who was a schools liaison officer at the time, admitted she went against police procedure – which prescribed that she stand back and summon help – when she intervened to help the injured.

As she retired, PC Kenworthy said she was “sad and angry” when she found out the bombing was an act of terrorism and warned although emergency services had “learned a great deal” from July 7, the city could “never be 100 per cent safe”.

PC Kenworthy, who lives in Kelvedon, said: “I would like to hope our security has improved and our communications have improved. I could not possibly say whether something like that could or could not happen again, but I hope that it won’t - I think all Londoners need to be alert.”

She said she wanted first aid to be taught in schools.

PC Kenworthy, who was awarded an MBE in 2008 and spent the later years of her career guarding the Palace of Westminster, said she had decided to retire on the 11th anniversary because she wanted to “remember it for not just a sad event”.

One of those she tended to was Martine Wiltshire, who had lost three-quarters of her blood and credits PC Kenworthy for saving her life.

PC Kenworthy said she had stayed in touch with the survivors and she was “very honoured” to know them.