Holding(s) in Company

Minco Plc ("Minco" or the Company")

Notification of Major Interest

London, 7 June, 2010 - Minco plc (MIO) was notified on 22nd April that Gartmore Investment

Limited purchased 17,645,409 ordinary shares on 21st April at £0.03 p per share thereby crossing the 5% threshold and now holds an indirect 6.23% in the Company through its UK & Irish Smaller Companies (3.453%) and Irish Growth Funds.

About Minco:

Minco PLC is an AIM quoted precious and base metals exploration and development company engaged in zinc exploration in Ireland in a joint venture with Xstrata Zinc and investments in zinc-silver projects in Mexico through a 40% shareholding in the TSX Venture Exchange (Toronto) listed XTIERRA Inc.

For further information, www.minco.ie or contact:

John Kearney: Executive Chairman +1 416 362 6686

Terence McKillen: Chief Executive +1 416 362 8243

Danesh Varma: CFO & Company Secretary +44 (0) 207 653 9881

John Frain / Fergal Meegan: (NOMAD) Davy +353 (0)1 6796363