A sculpture was unveiled yesterday to commemorate the lives of workers who have died on construction sites

A national memorial to building workers killed on site was unveiled at Tower Hill yesterday.

Speaking after a two-minute silence in memory of the workers who have died at work, London mayor Ken Livingstone said: “For 2000 years workers have built this city. Their imagination, courage and dedication has given us a city we are proud to live in. We salute those workers who continue today.”

UCATT general secretary Alan Ritchie reminded those at the ceremony that one building worker was killed on site every week.

He said: "Fifty nine have lost their lives this year. Thirty per cent of fatalities at work occur in our industry. This is unacceptable. We celebrate today, but we never forget the ones who lost their lives.”

UCATT commissioned the £100,000 work of art from sculptor Alan Wilson, who is based in Henley-on-Thames.