Very large Insurance Company
I worked there and I can remember we used to pay a fortune for all our IT. We were a FTSE 100 firm and yet for some reason got the worst deal imaginable for our IT. Our buying power was massive but didn't seem to count for anything.
If we wanted 64MB of ram we would be charged say £100 for it with 4 weeks delivery when Crucial could do it for £20 with free next day delivery.
I went and challenged this several times to the IT procurement folks and got the brush off. I felt something wasn't right. I then challenged the head guy about it and he blew his top, especially when I mentioned if brown envelopes/kick backs were involved. "Shut the fuck up!" I remember.
I guess they were.