FORM 3
        	UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
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                      	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	                      	

1. Name and Address of Reporting Person *

Darby Tommy	2. Date of Event Requiring Statement (MM/DD/YYYY)
10/10/2017 
	3. Issuer Name and Ticker or Trading Symbol

Ensco plc [ESV]	
(Last)        (First)        (Middle)

5847 SAN FELIPE ST., SUITE 3300	4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                            _____ 10% Owner
___ X ___ Officer (give title below)          _____ Other (specify below)
Controller /	
(Street)

HOUSTON, TX 77057       

(City)              (State)              (Zip)	5. If Amendment, Date Original Filed (MM/DD/YYYY)

	6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person	

Table I - Non-Derivative Securities Beneficially Owned	
1.Title of Security
(Instr. 4)	2. Amount of Securities Beneficially Owned
(Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)	4. Nature of Indirect Beneficial Ownership
(Instr. 5)	
Class A Ordinary Shares  	13238  	D  	 	
Class A Ordinary Shares  	18260  	I  	Represents shares held by an immediate family member  	

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 4)	2. Date Exercisable and Expiration Date
(MM/DD/YYYY)	3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)	6. Nature of Indirect Beneficial Ownership
(Instr. 5)	
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares				
Restricted Share Units  	  (1)	6/1/2021  	Class A Ordinary Shares  	14508.0  	  (1)	D  	 	
Restricted Share Units  	  (1)	6/1/2022  	Class A Ordinary Shares  	31845.0  	  (1)	D  	 	
Restricted Share Units  	  (1)	6/1/2021  	Class A Ordinary Shares  	13268.0  	  (1)	I  	Represents restricted share units held by an immediate family member  	
Restricted Share Units  	  (1)	6/1/2022  	Class A Ordinary Shares  	25320.0  	  (1)	I  	Represents restricted share units held by an immediate family member  	

Explanation of Responses:	
(1) 	Each Restricted Share Unit represents the economic equivalent of one Ensco Class A ordinary share and is settled in cash upon vesting. The Restricted Share Units vest in five equal annual installments beginning on the first anniversary of the grant date.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Darby Tommy
5847 SAN FELIPE ST.
SUITE 3300
HOUSTON, TX 77057			Controller		

Signatures		
/s/ Davor S. Vukadin, by Power of Attorney		10/19/2017	
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.	
*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).	
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).	
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.	
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.	

POWER OF ATTORNEY
Know all by these presents that the undersigned hereby constitutes and appoints Colleen W. Grable, Davor S. Vukadin and Elizabeth W. Darby, and each of them severally, with full power of substitution and resubstitution, the undersigned's true and lawful attorney-in-fact to:
1.    execute for and on behalf of the undersigned, in the undersigned's capacity as an officer or director or both of Ensco plc, an English limited company (the "Company"), Forms 3, 4 and 5 (and any amendments thereto) in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules thereunder;
2.    do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5, complete and execute any amendments thereto, and timely file such form with the U.S. Securities and Exchange Commission (the "SEC") and any securities exchange or similar authority, including without limitation the filing of a Form ID or any other documents necessary or appropriate to enable the undersigned to file the Forms 3, 4 and 5 electronically with the SEC; and
3.     seek or obtain, as the undersigned's representative and on the undersigned's behalf, information on transactions in the Company's securities from any third party, including brokers, employee benefit plan administrators and trustees, and the undersigned hereby authorizes any such person to release any such information to each of the undersigned's attorneys-in-fact appointed by this Power of Attorney and approves and ratifies any such release of information; and
4.    take any other action in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by or for, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such information and disclosure as such attorney-in-fact may approve in such attorney-in-fact's discretion.
The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever required, necessary or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution, resubstitution and revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request and on the behalf of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with, or any liability for the failure to comply with, any provision of Section 16 of the Exchange Act.
As of the date of the undersigned's execution of this Power of Attorney, (i) this Power of Attorney shall supersede and replace any power of attorney previously granted by the undersigned with respect to the Company's securities, and (ii) the undersigned hereby revokes any such previously granted power of attorney.
This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 or 5 with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to each of the foregoing attorneys-in-fact.

[SIGNATURE PAGE FOLLOWS]

IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of this 12th day of October, 2017.
    Signed and acknowledged:

/s/ Tommy Darby
Signature

Tommy Darby
Printed Name