Notice - Electronic Delivery of Proxy Materials to Ensco Stockholders

If you are a stockholder of Ensco (NYSE:ESV), (including a registered stockholder who holds a stock certificate, an Ensco employee who holds shares in employee benefit plans, or a beneficial shareholder whose common shares are held through a bank, broker or other nominee), you can sign up to have all future Ensco proxy materials and annual reports delivered to you electronically.

This consent to electronic delivery is an arrangement managed by Broadridge Financial Solutions, Inc. and not by Ensco. To give your consent, you will be leaving the Ensco website. You should also note that the validity of any voting instructions you give in the future with respect to any shareholder proposals will be determined by the banks, brokers and other nominees through which you hold your shares. Ensco will not be involved in this process.

There is no charge for this service, although you may incur costs associated with electronic access such as usage charges for internet service providers and telephone companies. Electronic delivery also involves risks, such as system outages and slow downloading time. You should not consent to electronic delivery if you cannot use all of the electronic media identified by your bank, broker or other nominee. You are entitled to revoke your consent at any time and receive paper copies of our proxy materials and annual reports.

For Brokerage Accounts: If you consent to receive proxy materials and annual reports electronically, your consent will cover each eligible security in your brokerage account. Whenever a company whose securities you hold in your brokerage account elects to make information available in an electronic format, you will no longer receive printed copies of that company's annual report or proxy statement.

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