13Alpha
When I flew LGW to EDI and return over a weekend a couple of years ago and my baggage went to Barcelona by mistake, the BA helpline in Newcastle couldn't help, the outsourced baggage handling people in EDI couldn't help and it was only when I approached a BA baggage person in LGW arrivals that my bag was traced and returned to me.
So the BA people at LGW who lost your bag were able to tell you where they had sent it and managed to get the outsourced people in BCN to send it back to you!!! That's a great way to differentiate.