The BA28 may be co-incidental but I also experienced bedding snaffling on this route, although not nearly as dramatic as volar described.

In my case, I was moved from a WT+ seat (faulty IFE) to an unoccupied CW seat downstairs. There wasn't a trace of bedding or a pillow. The cabin crew foraged downstairs and upstairs for spare bedding but none could be found - it was a nearly full flight, but she was kind enough to retrieve the pillow and blanket I left behind upstairs. Still, I was as a happy as Larry but this will bring little comfort to volar. It is quite shocking that a passenger would deprive another so shamelessly.