Offer Approach

NMT Group PLC
23 August 2005


                     NMT GROUP PLC ('NMT' OR THE 'COMPANY')

                               OFFER APPROACH


The Board of NMT has been approached by the Board of Zi Medical plc ('Zi 
Medical'), an AIM traded medical devices company and its financial advisers,
Brewin Dolphin Securities; NMT can confirm that it is in preliminary discussions
with Zi Medical which may or may not lead to an offer being made for the whole
of the issued and to be issued ordinary share capital of the Company.


A further announcement will be made in due course.


Under the provisions of Rule 8.3 of the City Code on Takeovers and Mergers (the
'City Code'), any person who, alone or acting together with any other persons(s)
pursuant to an agreement or understanding (whether formal or informal) to
acquire or control relevant securities of Zi Medical or NMT, owns or controls,
or becomes the owner or controller, directly or indirectly, of one per cent. or
more of any class of securities of Zi Medical or NMT is required to disclose, by
not later than 12.00 noon (London time) on the London business day following the
date of the relevant transaction, dealings in such securities of that company
(or in any option in respect of, or derivative referenced to, any such
securities) during the period to the date on which the offer becomes or is
declared unconditional as to acceptances or lapses or is otherwise withdrawn.


Under the provisions of Rule 8.1 of the City Code, all dealings in relevant
securities of Zi Medical or NMT by the third party or NMT, or by any of its
respective associates (within the meaning of the City Code) must also be
disclosed.


If you are in any doubt as to the application of Rule 8 to you, please contact
an independent financial adviser authorised under the Financial Services and
Markets Act 2000, consult the Panel's website at http://
www.thetakeoverpanel.org.uk/ or contact the Panel on telephone number +44 207
638 0129; fax [phone].


In accordance with the provisions of Rule 2.10 of the City Code on Takeovers and
Mergers, the Company confirms that it has 8,711,317 ordinary shares of £4 each
in issue and admitted to trading on AIM under the UK International Securities
Identification (ISIN) Number GB00B030GD19.


NMT also has in issue 234,158,819 deferred shares of 1 pence each. These shares
are unquoted.

Tel. Contact:

Tony Fletcher, 01506 445000

Gordon Beattie, Beattie Communications, 01324 602550


END


23 August 2005

                      This information is provided by RNS
            The company news service from the London Stock Exchange