Ghost Pictures: Ghost in the Choir Loft

This photo was taken in 1982 inside London's St. Botolph's Church by Chris Brackley. If you look closely in the upper right side of the photo, you will notice a figure of a woman standing in the loft. According to Brackley, there were only three people inside that church and nobody went in the loft that time.

What do you think of the photo? is it real? After the photo was taken, Brackley was contacted and told about the discovered coffin in the church.
Source: ParanormalAbout