Doctor Who Restoration Team
It was formed in 1992 by a group of fans who asked for and received funding from the BBC to perform colour restorations on a series of John Pertwee Doctor Who episodes.Sound engineer Mark Ayres explained the difficulties: "There are some difficult decisions as to how far I should take my work.[3]" The War Machines featured a couple of instances of sound effects being faded in at the wrong points during the original studio recordings.Since work on the Doctor Who DVD releases began, the frequency of these edits and revisions has increased.Later releases have had their opening and closing credits remade to match the originals using modern software and electronic fonts, untidy transitional frames have often been removed resulting in a fractionally shorter running time, miscued sound effects are routinely adjusted and visual effects considered substandard are adjusted.