Holding(s) in Company

Regal Petroleum PLC
16 May 2006


For Immediate Release                                         16 May 2006



                              REGAL PETROLEUM PLC

                                ('the Company')


                               Holding in Company



The Company was notified on 15 May 2006 by Henderson Global Investors and its
associated companies, acting as agent for its discretionary clients that they
have an interest in 17,728,238 of the Company's ordinary 5p shares ('Ordinary
Shares') representing 13.80 per cent. of the issued Ordinary Share capital of
the Company.





For further information, please contact:

Regal                                   Tel: [phone]
Roger Phillips, Finance Director

Buchanan Communications                 Tel: [phone]
Bobby Morse







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