Never before seen footage of Baden Clay and McHugh

For the first time, footage has been uncovered showing Gerard Baden-Clay and his mistress, Toni McHugh, together in the very office where their year-long affair began.

It comes after the Brisbane Supreme Court found Baden-Clay guilty of murdering his wife, Allison, sentencing him to a minimum of 15 years behind bars.

Video obtained by A Current Affair shows Baden-Clay and Ms McHugh attending an auction day in 2009 as part of their work with a real estate agency.

The smiling couple stands metres apart amongst a group of the prospective buyers patiently answering queries.

The property going up for auction belongs to Baden-Clay's father, Nigel, who can also been seen in the crowd standing near McHugh.

The video was taken shortly after Baden-Clay had told his counselor that he was under financial stress.

Allison's body was found in a creek bank in Brisbane's west on April 30, 2012.

The discovery came 10 days after Baden-Clay reported her missing.

Baden-Clay will be eligible for parole in 15 years.