Ken,
Actually, Harrods has a concierge and personal shopper service.
On the ground floor near the entrance to the high jewellery and watches is a concierge desk but they are also dotted all over the store.
The green-liveried men and women are the concierge staff.
They will help everyone.
Of course, Harrods VIP members get even more services....
Regards,
MTF