This is the CCTV footage
It was released to the public via the Metropolitan Police website on 2 May 2008 as the file terror41-05cctv-7july-luton.wmv but has since been removed and it has not knowingly been archived by any official body or the media.
The blurring of much of the background is deliberate (and has also obscured timestamps) but fast forwards to 3:56 for a clear section (a car park scene).
I have been semi-reliably informed that the CCTV installation at Luton station utilised a Tecton Miniplex multiplexer, which takes several video feeds and overlays the camera number and time stamp, then outputs a video signal to a recording device. The maximum number of camera inputs on a Miniplex is 17.
It is notable that the active area is surrounded by a black border and on the left hand and right hand outer edges are two grey columns. Is this a tell tale sign that an optical method was used then the border of the digitised footage, containing the outline of the cabinet of the CCTV monitor, was cropped in the digital domain?
The original analogue video recording almost certainly had a 4:3 aspect ratio but the aspect ratio in the digital video file is not 4:3 and the width of the active area is squashed. How did the digital video file most likely end up with an incorrect aspect ratio?
The CCTV footage has a vertical serial number 3 10 41071. This is clearest in the car park scenes. It appears to be subsequently added in the digital domain as the CCTV footage exhibits a certain degree of juddering with the camera number and the time date captions moving along with the rest of the image, but the position of the serial number remain fixed. Any ideas what the purpose of this serial number is?