Mr Gerstner's contract provides him with ten years' consultancy work following his retirement.
The former chairman is on a £175,000-a-year consultancy fee with the bank.
One exception is the former British prime minister, Tony Blair, who has a reported £8m ($12m) a year consultancy contract with Kazakhstan.
Peter Fusaro of Global Change Associates, a consultancy, knows of 75 environmental hedge funds, up from a couple three years ago.Not everyone is convinced.
One solace: Wilby has signed a three-year consultancy agreement with Legg's bond overseer, Western Asset Management.
Emerson Electric Charles Knightht got a 15-year consultancy deal where he has to work just one month out of the year.
Consultancy revenue in the UK has increased from £218 million to £400 million (about ¥33 billion to ¥72 billion) a year (Fig. 4a).
AMEC has been awarded a five-year consultancy and engineering services contract by the Kuwait National Petroleum Co, covering upgrades, refurbishment and modifications on Kuwait's three existing refineries.
Finally environmental consultancy WSP gained 42p to 202p after an inline trading statement and news it had agreed a new four year £152m credit facility with its banks.
Overnight I became a leadership trainer and facilitator, and three years later I was promoted to Head of Consultancy.
In the last three years he has received payment for his consultancy services from: Honeywell International, Chrysotile Association and Zimbabwe National Chrysotile Taskforce.
