Tim Woodward (centre) and Adrian Ashley (right) were acquitted of their charges with gross negligence manslaughter in February last year following a criminal inquiry into the deaths of four fire fighters
A third defendant, Paul Simmons (left), was acquitted of manslaughter on the directions of the judge part-way through the trial.
Two fire officers have been acquitted of manslaughter charges following the deaths of four of their colleagues at a warehouse fire in 2007.
An investigation into the deaths of four firefighters who died at a warehouse blaze in 2007 cost £4.6 million
Expert witness says mistakes weren't made