Planning and funding setbacks delayed completion from 2003 to 2006 and pushed up the cost by 18% over the original estimate.

FORBES: Gunning for It All

He said the summer's bad weather had delayed the completion of the athletics track but contractors were hoping to make up time on the road and retail park.

BBC: City ground 'delayed to May 2009'

The changes came as the company increased the number of patients in the study from 12, 500 to 18, 000 and delayed the expected completion date of the study until 2012.

FORBES: Schering-Plough Backdates Trial