12 April, 2011 – US Oil and Gas – Holdings in Company

U.S. Oil and Gas plc

(the “Company”)

Holding(s) in Company

The Company today received notification that, following the placing that was conducted on 30 March 2011 (the “Placing”), CFS Independent Limited controls 1,668,835 ordinary shares of 0.0001p each, with one right to vote each, in the Company (“Ordinary Shares”), representing 4.45% of the voting rights in the issued ordinary share capital of the Company. Prior to the Placing, the number of Ordinary Shares under CFS Independent Limited’s control did not represent a substantial shareholding.

THE DIRECTORS OF THE COMPANY ACCEPT RESPONSIBILITY FOR THE CONTENTS OF THIS ANNOUNCEMENT.

—ENDS—

For further information contact:

US Oil and Gas plc

Brian McDonnell, Chief Executive Officer

+353 (0) 872383419

beamac@eircom.net

SVS Securities plc – PLUS Corporate Adviser

Peter Ward / Alexander Brearley

+44 (0)20 7638 5600

SVS Securities plc – Broker

Ian Callaway / Alex Mattey

+44 (0)20 7638 5600

Notes to Editors

US Oil and Gas plc is a PLUS (Ticker: USOP) listed oil and gas exploration company with a strategy to identify and acquire oil and gas assets in the early phase of the upstream life-cycle and mature them in to marketable opportunities for the medium and large-sized oil companies. The Company’s main asset is in Nye County, Nevada where it holds the entire share capital of the US-based company Major Oil International LLC. Major Oil has acquired, and intends to acquire, rights to exploration and development acreage in two high potential resource areas in Hot Creek Valley, Nye County, adjacent to the oil and gas rich Railroad Valley area of Nevada, both of which are part of the Sevier Thrust of central Nevada and western Utah, USA.

For further information please refer to our website at: www.usoil.us

U.S. OIL AND GAS PLC

(END) Dow Jones Newswires

April 12, 2011 12:33 ET (16:33 GMT)

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