That's appalling- as previous posters have said, looks like either caught in the baggage belts at LHR, or possibly dragged under a vehicle. Modus operandi (when I was in lost baggage @ LGW)when this happened, we would try to get message to pax at gate if damage discovered before acft departure. If acft had departed message would be sent to destination with a view to telling pax about damage immediately on arrival...and with info as to when it would arrive. I find it utterly shocking that things have slipped this much.
