Heritage Oil Plc: Holding(s) in Company

LONDON, UNITED KINGDOM--(Marketwired - Dec 30, 2013) - Heritage Oil Plc (the "Company") (TSX:HOC)(LSE:HOIL) -

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARESⁱ

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:ⁱⁱ

Heritage Oil Plc

2. Reason for the notification:

An acquisition or disposal of voting rights

3. Full name of person(s) subject to the notification obligation:ⁱⁱⁱ

Lansdowne Partners Limited being the General Partner of Lansdowne Partners Limited Partnership

Lansdowne Partners International Limited

Lansdowne Partners Austria GmbH

4. Full name of shareholder(s) (if different from 3):^iv

HSBC Client Holdings UK Limited

5. Date of the transaction and date on which the threshold is crossed or reached:^v

23 December 2013

6. Date on which issuer notified:

27 December 2013

7. Threshold(s) that is/are crossed or reached:^{vi, vii}

5%

8. Notified details:

A: Voting rights attached to shares viii,ix
Class/type of shares if possible using the ISIN CODE	Situation previous to the Triggering transaction		Resulting situation after the triggering transaction
	Number of Shares	Number of Voting Rights	Number of shares	Number of voting rights		% of voting rights x
			Indirect	Direct xi	Indirect xii	Direct	Indirect
JE00B2Q4TN56	28,498,394	28,498,394			Below 5%		Below 5%

B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Expiration date xiii	Exercise/ Conversion Period/ Date xiv	Number of voting rights that may be acquired if the instrument is exercised/ converted.	% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv,xvi
Resulting situation after the triggering transaction
Type of financial instrument	Exercise price	Expiration date xvii	Exercise/ Conversion period xviii	Number of voting rights instrument refers to	% of voting rights xix,xx
CFD	N/A	N/A	N/A	Below 5%	Nominal	Delta
					Below 5%

Total (A+B+C)
Number of voting rights	% of voting rights
Below 5%	Below 5%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: ^xxi

Lansdowne Partners International Limited is the parent undertaking of Lansdowne Partners Limited and Lansdowne Partners Austria GmbH. Lansdowne Partners Austria GmbH and Lansdowne Partners Limited Partnership act as discretionary co-investment managers to certain client funds.

Proxy Voting:

10. Name of the proxy holder:

Lansdowne Partners Limited and Lansdowne Partners Austria GmbH

11. Number of voting rights proxy holder will acquire:

12. Date on which proxy holder will acquire voting rights:

13. Additional information:

Based on total voting rights of 277,925,878

14. Contact name:

Kamran Salahuddin

15. Contact telephone number:

[phone]