Was in Harrods 10 days ago as part of a trip to London.  
Immediately I walked through the door this security guy pounced on me and queried the package I was carrying and also gave my rucksack a prod.  Reluctantly he allowed through the hallowed portals and there was an audible clunk as the whole tone of the place sank several notches with my presence. I felt like asking if they'd do me a certificate to prove I wasn't really good enough for Harrods. We went to all the expensive bits, jewellery, the fine wine department (not as good as Super U, IMO), the cameras to ask a few questions about the Hassleblads..  It's a great place and the staff really are very professional. Afterwards we went and had a Big Mac.