OFFICERS from the Crown Prosecution Service and Metropolitan Police visited Wembley stadium last week to decide whether to press charges following the death of Patrick O'Sullivan in January 2004.
A file on the case has been passed to the CPS, which is now deciding its next action.
Mr O'Sullivan was working for PC Harrington when he was crushed to death after a platform fell 30 m onto him. The platform had been fixed to part of the structure under construction but was dislodged after getting snagged by a crane.
It is understood the visit was part of a new push in the investigation of Mr O'Sullivan's death following pressure from safety campaigners.
A site source said: 'Things seemed to have gone quiet but in the past three months a lot of people have been reinterviewed. There seems to have been a push to re-examine all of the evidence.' A CPS spokeswoman said: 'The Metropolitan Police have passed a file to us following their investigation.
Understandably it is still early days and there is no decision on whether or not any prosecution will happen. We will look at the file and will have to decide whether there is a reasonable likelihood of conviction for any individual or company involved in the incident.'