All that remains of that match are a few photographs. BBC was having the broadcasting rights for the 1983 Cricket World Cup (which was being played in England). Back then, India was being considered as one of the minnows, with West Indies being the overwhelming favorites to win the world cup. On that day, West Indies was playing against Australia and therefore the BBC sent the crew and equipment to cover that match. For them, the India vs Zimbabwe match was not a very important one.
During that period no one was willing to broadcast the match as the matches are too long and on that particular day BBC was having a strike and so is the reason the match was not recorded or broadcasted by the media but the video is recorded by a private individual and was demanding huge amount during that time and after that no idea what happened to that, during that period cricket was not that big and there was not much money involved.
For this particular game ; English media had a very colonial mindset about any Subcontinent team so they didn't bother to cover this game and same goes with the broadcasters.
As mentioned it was not because of the colonist mentality but because of a strike by the staff members with the help of union members which boycoted live events and refused to do the job until their demands were met.