Valaris Ltd — Director's Dealing 2012

May 17, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ensco plc (ESV)
CIK: 0000314808
Period of Report: 2012-05-15

Reporting Person: RODRIGUEZ RITA M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-15	American Depositary Shares	M	3000	$33.55	Acquired	24980	Direct
2012-05-15	American Depositary Shares	S	3000	$48.04	Disposed	21980	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-15	Employee American Depositary Shares Options (right to buy)	$33.55	M	3000	Disposed	2012-06-01	American Depositary Shares (3000)	Direct

Footnotes

F1: This transaction was executed in multiple trades at prices ranging from $48.03 to $48.05. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F2: The options became exercisable in four equal annual installments beginning on June 1, 2006.