August 20, 2010 08:00 ET

Queensland update

For immediate release:

                                          Sirius Exploration Plc
                                        ("Sirius" or the "Company")
                                                     
                                             Queensland update

The Directors of Sirius Exploration Plc, (AIM: SXX, OTC: SRUXY), the mining and exploration holding company
focused  on  potash and salt deposits in North America and Australia, are pleased to provide an  update  in
relation  to  its  properties  in Queensland, Australia. The Company currently  holds  exploration  permits
covering  approximately  600  square kilometres of land overlying the  prospective  Boree  Salt  Member,  a
formation recognised for its significant salt and potash potential. These properties lie some 50 kilometres
south of the town Blackall which has an established road, rail and airplane infrastructure.

During  the  last quarter Boyd PetroSearch ("Boyd") has been conducting a full interpretation  of  existing
seismic  and petroleum drilling data for the permit land on behalf of the Company. This work was  conducted
in  two  phases  and has now been completed. Phase 1 involved the interpretation of publicly  available  2D
seismic  data; phase II involved digitising the available raster data of seismic lines within  the  project
area  and integrating these with the initial interpretation to produce a new robust interpretation  of  the
Boree Salt Member.

The  initial  findings of this work suggest that significantly more salt is present within the  exploration
permits than originally believed - Boyd calculating that approximately 100 billion tonnes exist within  the
northern  exploration  permits.  This is approximately a 100% increase  when  compared  with  the  previous
estimations by Sirius using the historic Poseidon seismic interpretation (2008 Terra Search report).

Furthermore,  no fatal flaws in the current programme to explore for potash were identified through  Boyd's
2D seismic interpretation. Indeed, subsequent work by Sirius which has involved the integration of the Boyd
interpretation with additional data has enabled the Company to interpret a site considered very prospective
for potash formation.

Chris Catlow, Chairman of Sirius Exploration, commented:
        "Thanks  to Boyd's work, we now hold the most comprehensive analysis of the Boree Salt Member  that
        exists  for  our Adavale Project. We are now working with our exploration partners to  develop  the
        initial  test  drill  programme and look forward to updating shareholders on this  activity  as  it
        progresses. Adavale  is  located close to an area where good infrastructure is already in  place.  
        It  is  also encouraging  to see the progress being made by East Energy Resources with its nearby 
        Blackall  Coal project."

Competent Person's Statement

The technical information contained in this announcement has been reviewed and approved by Derek Stonley, a
director  of  the Company. Mr Stonley graduated from Cambridge with a BA in Natural Sciences and  has  over
forty  years  experience  in  the mining sector. From 1980-1987, Mr Stonley held  senior  positions  at  BP
Minerals  International  Limited.  As  Consulting Geologist at BP Minerals,  he  was  responsible  for  the
development  of  methodologies  for valuing exploration properties worldwide.  Following  the  sale  of  BP
Minerals to RTZ, Mr Stonley was Senior Geologist and ultimately a Consulting Geologist at Rio Tinto  Mining
and Exploration Limited.

- ENDS -

For further information, please contact:

Sirius Exploration Plc                                             
Richard Poulden                                                    Tel: +971 504 524 994

Beaumont Cornish Limited (Nomad)                                   
Roland Cornish                                                     Tel: +44 (0) 207 628 3396
                                                                   
Daniel Stewart & Company plc (Broker)                              
Christopher Theis / Emma Earl                                      Tel: + 44 (0) 20 7776 6550
                                                                   
Gth Media Relations                                                
Toby Hall/Christian Pickel                                         Tel: + 44 (0) 20 3103 3903/
                                                                   3902