Guest Patsy, the attack on BP is based on evidence of short-cuts and hasty decisions, not on size. This has been discussed over and over, and whether believed or not has little to do with size (fat cats).

If one examines the balance sheets of BP, Shell, Exxon-Mobil, Chevron etc., after allotments for shareholders large and small (many of us), and expenses, the profit in good years is 10% or less; many smaller concerns do better than that.
The total take means no more for the books of big companies than it does for the small local store chain with 20 employees and 3-4 premises.

Of course, large concerns affecting the livelihoods of millions can yield political and legislative clout- that is another matter; better legislation is needed. This also is the subject of several threads.
Regulatory bodies should see that companies play by the rules and operate safely. No one disputes that the U.S. bodies were lax and the hope is that the reorganization will help.