The Health and Safety Executive (HSE) has revealed that a quarter of construction sites it visited in the capital city failed inspections.
The organisation visited over 400 projects in London as it looks to clamp down on the number of deaths and instances of injury and ill health there are each year in the industry.
It was announced that 93 of the 401 sites did not come up to scratch in terms of meeting the minimum legal standards for health and safety. Over 100 prohibition notices were served in order to stop work immediately as some activities were found to be too dangerous to be allowed to continue without standards being bettered.
In addition, 22 improvement notices were issued requesting that work practices were made safe.
Andy Beal, principal inspector for construction in London at the HSE, said that it was good news that the majority of construction sites visited obeyed the law, but it was unfortunate that there was still a "sizeable minority" letting down the rest of the industry.
"Failures to properly protect workers during construction activities at height, inadequate site management, exposure to dangerous types of dust and inadequate washing facilities were among the dangers and low standards we found on some sites.
"The whole purpose of carrying out these spot checks is to raise awareness of the dangers and reduce the number of construction workers being killed or seriously injured at work," he added.
The construction industry is in the top three high-risk sectors for deaths and injuries, with issues such as site organisation, slips and trips, work at height, cranes, electricity, fire and demolition all needing to be addressed by contractors and builders.
According to the latest statistics, although the construction industry accounts for five per cent of employees in Britain, it is responsible for 22 per cent of fatal injuries and ten per cent of reported injuries.
Figures released from 2011/12 showed that there were 49 worker fatalities, with 23 of these being self-employed people.
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