Having looked further on that web site and elsewhere, I believe that thoughts that are leading to the conclusion that the material of these bags (and seals) cannot be cut, tampered with, manipulated are incorrect.
From elsewhere: "Security is our priority, all bags are sealed in Tamper Aware Bags (TABs) or Tamper Aware Seals (TASs) upon collection and remain sealed until they are handed over to British Airways for your flight, at which point the TABs/TASs are removed. Vehicles also remain locked at all times when in service."
"All baggage handlers are subject to strict interview processes and criminal background checks. Vehicles also remain locked at all times when in service."
While the company tries to prevent tampering by carefully screening their baggage handlers and keeping the transporting vehicles locked, the bags and seals are intended to show (are thus "aware") if anyone has tampered with the baggage. (So, perhaps they don't trust their staff has much as they would like, and want to let the staff know that they will be caught if they do tamper with the bags while they are in their care.) . How do they do that? You've got me...
This doesn't appear to be something like those "systems" at some airports where they wrap your baggage up in a bunch of layers of heavy-duty plastic wrap.
