TSTR.L Regulatory News (TSTR)

Tri-Star Resources plc ("Tri-Star" or the "Company")

31 October 2014

Technical Report issued on Bald Hill Antimony Project in New Brunswick, Canada

Tri-Star (AIM: TSTR), the integrated antimony development company, has received an updated independent Technical Report on the Bald Hill Antimony Project located in New Brunswick, Canada in respect of a technical report originally published in 2010 for Rockport Mining Corporation, a company acquired by Tri-Star in 2013.

The Report recommends further exploration and investigation at Bald Hill. Such exploration programmes, if undertaken, would aim to establish an Inferred Mineral Resource through additional surface excavation and diamond drilling, including drilling of the already known zones at closer drill spacing. There is no other new material information contained in the updated report.

The Report was prepared by Mr. Peter Banks (B.Sc., P.Geo.) and Mr. John Langton (M.Sc., P.Geo.), of MRB & Associates, in accordance with NI 43-101 standards and will be filed on the System for Electronic Document Analysis and Retrieval ("SEDAR") in Canada, as required under applicable securities regulations as soon as practicable. A copy of the Report will also be made available for download on Tri-Star's website, www.tri-starresources.com.

Enquiries:

Tri-Star Resources plc

Emin Eyi, Managing Director Tel: +44 (0) 1303 213 180

Ken Hight, Executive Director Tel: +1 647 200 8706

SP Angel Corporate Finance (Nomad and Broker) Tel: +44 (0) 20 3463 2260

Robert Wooldridge / Katy Birkin

Yellow Jersey PR Limited (Financial PR) Tel: +44 (0) 7768 537739

Dominic Barretto / Kelsey Traynor

Keith, Bayley Roger & Co (Joint Broker) Tel: +44 (0) 20 3100 8300

Brinsley Holman

This news release may contain "forward-looking information", as defined under applicable Canadian securities laws. Forward-looking information typically contains statements that relate to future, not past, events and often contains words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. There can be no assurance that the forward-looking information contained in this release will prove to be accurate, and actual results and future events could differ materially from those anticipated in such information.

All statements, other than statements of historical fact, included in this release including, without limitation, the viability of chemical processes, the financial assumptions, bases and outputs mentioned, constitute forward- looking information. Forward-looking information is based on a number of factors and assumptions which have been used to develop such information but which may prove to be incorrect, including, but not limited to, assumptions in connection with the ability to deliver any of the outcomes referred to, the availability of financing and general economic and market conditions. Forward-looking information involves known and unknown risks, uncertainties and other factors which may cause actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking information. Such factors include, among others, risks associated with changes in laws, the ability to raise finance on acceptable terms for any of the projects or facilities mentioned, the volatility of commodity and raw material prices, currency exchange rates and interest rates, global economic conditions and the additional risks identified in the Company's Annual Report and Financial Statements for the year ended 31 December 2013 or other reports and filings with applicable securities regulators. Forward-looking information in this release is based on the Directors' beliefs, estimates and opinions on the date of this release and the Company does not undertake to update publicly or revise the forward-looking information contained in this release, except as required by applicable securities laws.

Any financial outlook or future-oriented financial information in this release, as defined by applicable Canadian securities laws, has been approved by the Directors as of the date of this release. Such financial outlook or future oriented financial information is provided for the purpose of providing information about the Company's current expectations and plans relating to the future. Readers are cautioned that such outlook or information should not be used for purposes other than for which it is disclosed in this release.