Valaris Ltd — Director's Dealing 2012

Mar 20, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ensco plc (ESV)
CIK: 0000314808
Period of Report: 2012-03-16

Reporting Person: Robert Kevin C (Sr. Vice President - Marketing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-03-16	American Depositary Shares	M	18181	$35.12	Acquired	84430	Direct
2012-03-16	American Depositary Shares	S	18181	$57.84	Disposed	66249	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-03-16	Employee American Depositary Shares Options (right to buy)	$35.12	M	18181	Disposed	2017-01-03	American Depositary Shares (18181)	Direct

Footnotes

F1: This transaction was executed in multiple trades at prices ranging from $57.75 to $57.91. 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: Share amount and exercise price reflect an anti-dilution adjustment made in connection with our subsidiary's spin-off of Seahawk Drilling, Inc. in 2009.

F3: The options became exercisable in four equal annual installments beginning on January 3, 2008.