INFA.L Regulatory News (INFA)

25 March 2013 For Immediate Release

InfraStrata plc

("InfraStrata" or the "Company")

Interim results for the six months ended 31 January 2013

InfraStrata plc (AIM:INFA), the independent petroleum exploration and gas storage company today announces its unaudited interim results for the six months ended 31 January 2013.

Overview and highlights

Operational

·; Increasing focus on exploration activities.

·; Significant prospective resources identified within the Company's exploration licences in County Antrim and offshore Dorset.

·; A Prospectivity Review by Merlin Energy Resources Limited has identified P50 prospective resources in excess of 450 million barrels of oil within the PL1/10 exploration licence in County Antrim.

·; In March 2013 a 5% interest in the PL1/10 licence was sold to fund drilling activity.

·; BP Gas Marketing Limited total funding of £1m received to 31 January 2013 in relation to its option to acquire a 50.495% interest in Islandmagee Storage Limited.

·; Planning permission and a gas storage licence were awarded in October 2012 for the Islandmagee gas storage project.

·; Three well drilling programme planned within its exploration and gas storage portfolio for the 2013 and 2014 calendar years, with exposure to a fourth well in the East Midlands via the Company's shareholding in Corfe Energy Limited.

·; The Company is currently pursuing an opportunity to produce salt from Portland, Dorset.

Financial

·; Loss for the six month period ended 31 January 2013, after non-cash share of associates loss, of £0.8 million (31 January 2012 - loss £1.2 million).

·; Basic and diluted loss per share - 0.94p (31 January 2012 loss - 1.51p). Continuing basic and diluted loss per share - 0.86p (31 January 2012 loss - 1.51p).

·; Cash position inclusive of cash allocated to discontinued operations - £0.9 million (31 January 2012 - £0.6 million).

·; Net asset position - £10.7 million (31 January 2012 - £28.1 million).

Commenting on the results and outlook, Ken Ratcliff, Chairman, said:

"Good progress has been made with the Islandmagee project and defining the prospectivity within the Company's exploration acreage over the past six months.

InfraStrata is very well positioned to move forward into an exciting stage of development and increase shareholder value. We hope to develop the Company's existing exploration acreage, acquire new acreage and further develop the Islandmagee gas storage project with the project partners in the near future."

For further information please contact:

InfraStrata plc

Andrew Hindle, Chief Executive Officer 020 8332 1200

Craig Gouws, Chief Financial Officer

Financial PR - Buchanan

Richard Darby/Gabriella Clinkard/Tom Hufton 020 7466 5000

Nominated Advisor and Broker - Arden Partners plc

Richard Day/Katelin Kennish 020 7614 5917

Notes to Editors:

Background on InfraStrata plc

InfraStrata is an independent petroleum exploration and gas storage company. The Company is focused on two areas in the UK, in Dorset, England and Antrim, Northern Ireland.

Further information is available on the Company's website www.infrastrata.co.uk.

In accordance with the AIM Rules - Note for Mining and Oil and Gas Companies, the information contained in this announcement has been reviewed and signed off by the Chief Executive Officer of InfraStrata plc Andrew Hindle BSc, MSc, PhD, a Chartered Geologist with 28 years' experience, a Fellow of the Geological Society of London, and a member of the American Association of Petroleum Geologists and the Petroleum Exploration Society of Great Britain.

Chairman and CEO's Statement

InfraStrata plc ('InfraStrata' or the 'Company') is an independent petroleum exploration and gas storage company.

The Company is focused on two geographical areas in the UK, County Antrim and Dorset.

Financial results

InfraStrata has recorded a loss for the six month period ended 31 January 2013 of £0.8 million (31 January 2012 - loss £1.2 million). The loss for the period, together with the balance of £19.9 million loss brought forward, leaves a retained loss of £20.7 million to be carried forward.

The Company's revenue, when compared to the prior period, decreased by £143,294 largely as a result of current period inter-group revenue transactions with Portland Gas Limited being earned but eliminated on consolidation. In the comparative period, when Portland Gas Limited was accounted for as a Joint Venture, the related revenue transactions were recognised in the Group Statement of Comprehensive Income.

Project costs relating to Portland Gas Limited of £0.5 million were charged to the current period administrative costs; in the prior period these costs were accounted for as share of loss of a Joint Venture. Corporate and general administrative costs which have been very well controlled and are in line with budget, of £0.4 million, were incurred in the current period.

Total funding of £1 million was received to 31 January 2013 from BP Gas Marketing Limited in relation to its option to acquire a 50.495% interest in Islandmagee Storage Limited. The investment in the project development cost asset at the period end was £3m and related project freehold land of £0.4 million.

In terms of a Restructuring Agreement entered into with eCORP Oil & Gas UK Limited during July 2012, eCORP continues to subscribe for Portland Gas Limited preference shares and a total of £2.3 million was received up to 31 January 2013, £0.4 million of which was received during the current period. The preference shares acquired will provide eCORP with a 7.5% share of future profits in Portland Gas Limited. In addition, the Restructuring Agreement results in eCORP being entitled to receive a 3.75% share of future net profits in the exploration licence P1918.

The Company's cash (including cash disclosed as discontinuing) and net asset positions are £0.9 million (31 January 2012 - £0.6 million) and £10.7 million (31 January 2012 - £28.1 million) respectively.

PL1/10 Licence exploration project, County Antrim, Northern Ireland

The PL1/10 licence in Antrim was awarded to InfraStrata in March 2011 and covers an area of 663 square kilometres. InfraStrata is the operator of the licence with a 25% direct interest. The Company has a further indirect interest of 18% in the licence through a shareholding in project partner company Brigantes Energy Limited ("Brigantes"). Its overall net licence interest is therefore 43%.

A total of 400 kilometres of new 2D seismic data were acquired during 2011 and 2012, and processing of the data was completed in early October 2012. The interpretation of the data has resulted in the mapping of more than twenty very encouraging prospects and leads.

In line with the Company's overall strategy for securing funding into its projects, and as announced on 15 March 2013, the Company sold a 5% interest in the PL1/10 licence to Brigantes, in which InfraStrata holds a 40% interest. Under the terms of the agreement, Brigantes will pay £150,000 in cash and in addition carry InfraStrata for its share of 5% of the costs of the well. Taken together with previous funding arrangements with project partners, InfraStrata now has funding in place to cover the majority of its anticipated costs to drill the first exploration well.

A PL1/10 Prospectivity Review by Merlin Energy Resources Limited ("Merlin"), was announced on 15th March 2013 and published on the Company's website. Merlin has identified combined unrisked P50 prospective resources on the PL1/10 licence in the Triassic and Permian sandstone reservoir intervals of over 450 million barrels of oil ("mmbo") (net InfraStrata 194 mmbo).

InfraStrata is seeking a suitable site from which to drill the first exploration well to target P50 prospective resources of 25 million barrels of oil ("mmbo") recoverable (net 11 mmbo to InfraStrata) within the primary Triassic and Permian sandstone objectives. The well will also evaluate the potential of deeper Carboniferous sandstones. As with any new exploration province, the presence of a working petroleum basin carries a high risk and can only be resolved by drilling a well. Success with the first well would have the potential to open up a new play fairway within the licence with multiple reservoir targets in multiple prospects. Subject to obtaining the necessary consents and rig availability the well is anticipated to be drilled in Q4 2013.

InfraStrata intends, if possible, to coordinate the drilling of this well with the appraisal well planned for the Islandmagee gas storage project, which should ensure a more efficient use of drilling equipment on both projects.

P1918 Licence exploration project, Dorset, England

The Dorset petroleum licence comprising offshore blocks 97/14, 97/15 and 98/11 was awarded with an effective date of 1 February 2012. InfraStrata is the operator of the licence with a 70% direct interest. The Company has a further 8% indirect interest in the licence through a shareholding in project partner company Corfe Energy Limited. Its overall net licence interest is therefore 78%.

The InfraStrata led joint venture has purchased approximately 3,500 kilometres of existing 2D seismic data, and three existing 3D seismic surveys, within or adjacent to the licence. The focus of activity has been the offshore extension of the Purbeck Prospect, an anticline in the east of the licence, up dip of the onshore well Southard Quarry-1, which encountered petroleum in Jurassic and Triassic reservoirs during 1989 but which was not tested. The new mapping of the Purbeck Prospect shows it covering an area of approximately 13 square kilometres at the primary target level, the majority within the P1918 licence.

An initial best estimate of the prospective resources for the primary reservoir objective, the Triassic Sherwood Sandstone, is 100 billion cubic feet ("bcf") of gas recoverable (net 78 bcf to InfraStrata). An appraisal well is now required to test the productivity of the reservoir at a depth of approximately 2,500 metres below ground level.

The joint venture partners intend to reprocess 2D seismic data to define the sub-surface target location for a new appraisal well. It is proposed to drill the well directionally from an onshore location to the offshore within Block 98/11 of licence P1918. Subject to planning approval, rig availability and project funding, it is anticipated that the well will be drilled during Q1 2014.

Other petroleum exploration activity

The Company holds a 40% shareholding in two well-funded private independent petroleum exploration companies, Brigantes Energy Limited and Corfe Energy Limited. In addition to holding interests in the PL1/10 and P1918 licences, they also each hold a 5% production interest in the Avington oilfield in southern England. The Company has a net interest of 5% in an exploration well anticipated in Q3 2013 on the Burton-on-the-Wolds prospect in PEDL201 in the East Midlands, which is targeting prospective resources of 3.8 mmbo (net 0.19 mmbo Infrastrata).

Islandmagee gas storage project, County Antrim, Northern Ireland

Islandmagee Storage Limited ("IMSL") received planning approval for its development of a natural gas storage facility at Islandmagee, County Antrim on 18 October 2012. IMSL is currently applying for several marine licences, from the Northern Ireland Environment Agency, which are required for the offshore elements of the project. IMSL is an independent Northern Ireland registered company; a joint venture between a subsidiary of InfraStrata plc (65% shareholder) and Moyle Energy Investments Limited, part of the Mutual Energy group of companies (35% shareholder). The facility will have the capability to store 500 million cubic metres of natural gas.

On 19 January 2012 an agreement was entered into with BP Gas Marketing Limited ("BPGM") regarding the appraisal of the Islandmagee gas storage facility development project in County Antrim, and the grant of an option to BPGM to acquire a 50.495% equity interest in IMSL. Should the option be exercised, InfraStrata's equity interest in IMSL will become 32.178%.

Under the terms of a Joint Appraisal Agreement, BPGM agreed to fund the activities necessary to develop the project up to the point where a decision can be made on whether to proceed with a detailed engineering design.

BPGM funded the development of IMSL activities to the extent of £1,003,870 at the interim period end. The greatest item of the expenditure, which is still to be incurred, is the drilling of an appraisal well. The project has recently been granted a mineral licence from the Department of Enterprise, Trade and Investment which is required to drill the initial appraisal well. Drilling is expected towards the end of 2013 after initial civil engineering works are completed to create a wellpad, and after confirmation of a regulatory and operational framework will be adopted by the Northern Ireland and Republic of Ireland authorities to facilitate commercial operations of the facility on a level playing field with storage elsewhere in the UK and Ireland.

Portland project, Dorset, England

InfraStrata, through its subsidiary, Portland Gas Storage Limited, has signed a preliminary agreement with Portland Port to evaluate together the potential of a salt production project on Portland.

Unlike the Islandmagee storage project, which has greater flexibility, the poor seasonal gas storage market has meant that it is unlikely that the Portland gas storage project will be realised in the near term. Therefore the existing Portland site leases will be terminated at their next break date on 1 June 2013. Should gas storage market conditions improve or the salt production business progress, a new lease will need to be agreed with the landowner, Portland Port Limited.

The Company, through its subsidiary, Portland Gas Transportation Limited, will continue to renew the gas pipeline construction authorisation with the Department of Energy and Climate Change. With successful drilling for gas in the P1918 licence area the pipeline could potentially be used for exporting or importing gas.

Outlook

Good progress has been made in defining the prospectivity within the Company's exploration acreage. The coming year will see an increasing focus on the Company's activities towards drilling three wells within its exploration portfolio.

It is expected that the first well at the Islandmagee gas storage project will also be drilled within the next 12 months. The Company looks forward to working with its partners and stakeholders to progress all of its projects.

Two licence applications covering seven whole or part blocks, were submitted with partners in 27th Seaward Licensing Round. All the blocks applied for are subject to Department of Energy and Climate Change ("DECC") environmental assessments before any offer is made. The Company expects the award of these blocks to take place in a further tranche of licence awards by DECC during Q2 2013.

The on-going support of shareholders, as always, is much appreciated by the Board.

The Directors believe that the Company has adequate cash resources to meet general and administrative expenditure as well as support the Company's projects over the forthcoming 12 months.

Ken Ratcliff - Non-executive Chairman

Andrew Hindle - Chief Executive Officer

25 March 2013

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME for the six months ended 31 January 2013

CONSOLIDATED STATEMENT OF FINANCIAL POSITION as at 31 January 2013

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY for the six months ended 31 January 2013

CONSOLIDATED CASH FLOW STATEMENT for the six months ended 31 January 2013

NOTES TO THE INTERIM RESULTS for the six months ended 31 January 2013

1. Basis of preparation

The interim financial information in this report has been prepared using accounting policies consistent with IFRS as adopted by the European Union. IFRS is subject to amendment and interpretation by the International Accounting Standards Board (IASB) and the IFRS Interpretations Committee and there is an ongoing process of review and endorsement by the European Commission. The financial information has been prepared on the basis of IFRS that the Directors expect to be adopted by the European Union and applicable as at 31 July 2013.

Non-statutory accounts

Financial information contained in this document does not constitute statutory accounts within the meaning of section 434 of the Companies Act 2006. A copy of the statutory accounts of the Company for the year ended 31 July 2012 has been delivered to the Registrar of Companies. The audit report on these accounts is unqualified, did not include references to any matters to which the auditors drew attention by way of emphasis without qualifying their reports and did not contain a statement under Sections 498(2) or (3) of the Companies Act 2006.

The financial information for the 6 months ended 31 January 2013 and 31 January 2012 is unaudited.

Accounting policies

The interim financial information has been prepared under the historical cost convention.

The same accounting policies, presentation and methods of computation are followed in preparing the interim financial information as were applied in preparation of the Group's financial statements for the year ended 31 July 2012.

Going concern

The Directors have a reasonable expectation that the Group has adequate cash resources to meet committed expenditure. Consequently the Directors consider it appropriate to prepare the interim financial information on a going concern basis. As with other development companies which have no significant and consistent revenue streams, the Group will only be able to advance its development programme if it has sufficient resources to do so. To avail the Company of any new and emerging opportunities in the next twelve months, if necessary the Directors believe that further funding could be obtained by the issuance of new equity or through the disposal of an interest in projects.

NOTES TO THE INTERIM RESULTS for the six months ended 31 January 2013 (continued)

2.  Administrative expenditure

3.  Taxation

The taxation credit of £141,170 for the current period represents a reduction in the deferred income tax liability relating to the temporary difference arising on settlement of financial assets during the period.

The gross movement on the deferred income tax account is as follows:

NOTES TO THE INTERIM RESULTS for the six months ended 31 January 2013 (continued)

For the six months to 31 January 2013, in accordance with IAS 33, diluted earnings per share calculations are not presented as assumed conversion of outstanding share options would not be dilutive; as such the diluted earnings/loss per share is equal to the basic earnings/loss per share.

5.  Discontinued operations/Assets and liabilities held for sale

NOTES TO THE INTERIM RESULTS for the six months ended 31 January 2013 (continued)

5.  Assets and liabilities held for sale (continued)

The assets and liabilities held for sale at 31 January 2013 comprise the assets and liabilities of Islandmagee Storage Limited. At 31 January 2012 the assets and liabilities held for sale also included those of Portland Gas ESP S.L., which was subsequently disposed of.

BP Gas Marketing Limited has an option to acquire an interest in Islandmagee Storage Limited, the vesting of which is contingent on certain future events. If the option vests and is exercised, the Company would lose control of Islandmagee Storage Limited.

The loss from discontinued operations represents the loss of Islandmagee Storage Limited and for the year ended 31 January 2012, the loss of Portland Gas ESP S.L..

6.  Share capital

On the 15 February 2012 the Company issued 12,727,273 new ordinary 10p shares at 11p per share to raise £1,400,000 before expenses.

7. Non-controlling interests

Non-controlling interests are amounts paid by BP Gas Marketing Limited ("BPGM") to Islandmagee Storage Limited in relation to their option to acquire an interest in that company. Should BPGM exercise its option, this amount will form part of the consideration for the equity issued to BPGM.

9. Dividend

The Directors do not recommend payment of a dividend.

10. Publication of the interim report

This interim report is available on the Company's website www.InfraStrata.co.uk.