NOSTRUM OIL & GAS PLC — Proxy Solicitation & Information Statement 2015

Apr 17, 2015

Dear Shareholder

17 April 2015

Important information regarding electronic communications with shareholders

This letter accompanies the notice to members of the annual general meeting ("Notice") of Nostrum Oil & Gas plc (the "Company") to be held on 26 May 2015 at the offices of White & Case LLP, 5 Broad Street, London, EC2N 1DW. As you will see from the resolutions set out in the Notice, the Company is requesting that shareholders pass a resolution to allow the Company to use its website to communicate with shareholders.

This means that, instead of being obliged to send annual reports, notices of shareholder meetings and other documents to shareholders by post, we can instead publish them on our website at www.nostrumoilandgas.com. For those shareholders who consent, the website will be the way in which they access shareholder information.

You still have the right to ask for paper versions of shareholder information to be sent to you at no charge, but we would strongly encourage you to consider the electronic option. Using the website allows us to reduce printing and postage costs and speed up the provision of information to shareholders. It is also better for many shareholders who can choose and access just the information they need, from the website, at any time. The reduced use of paper will also have environmental benefits.

• If you wish to receive shareholder information by means of our website, you need to take no further action. If the proposed shareholder resolution is passed you will be notified by post when shareholder information has been placed on the website.
• If you wish to receive shareholder information in hard copy form, you should complete and sign the reply slip at the foot of this letter and return it to FREEPOST RLYX-GZTU-KRRG, Shareholder Administration Support, 34 Beckenham Road, Beckenham, Kent BR3 9ZA.
• If you do not reply within 28 days from the date of despatch of this letter, you will be deemed to have consented to website publication of shareholder information and if the proposed shareholder resolution is passed you will no longer receive hard copies in the post.

Registering your details on the Registrar's share portal will also give you easy access to information about your personal shareholding and the ability to vote electronically at Company general meetings. You will be able to see your dividend history, appoint a proxy to vote for you, arrange for dividends to be paid straight into your bank account and confirm any changes to your name or address, so that we know we are using up to date contact details. The address you need is www.capitashareportal.com

If you need help while using the Registrars' portal, please telephone Capita Asset Services on 0871 664 0391 (calls cost 10p per minute plus network extras, lines are open 9am – 5.30pm Mon –Fri). If dialling from overseas please call +44 20 639 3367.

Yours faithfully

Thomas Hartnett Company Secretary

Please detach and return to FREEPOST RLYX-GZTU-KRRG, Shareholder Administration Support, 34 Beckenham Road, Beckenham, Kent BR3 9ZA (No stamp is needed)

I wish to continue to receive hard copy shareholder information from Nostrum Oil & Gas Plc

Full Name of Shareholder(s) in block capitals
Full Address of Shareholder(s) in block capitals
Investor Code if known
Signature	Date

Please note that if you do not detach and return this form by 15 May 2015 you will be deemed to have consented to the receipt of shareholder information via our website