SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 6-K


                            Report of Foreign Issuer

                      Pursuant to Rule 13a-16 or 15d-16 of
                       the Securities Exchange Act of 1934


                        For the Month of February 7 2003

                         Commission file number: 0-30924


                                   MARCONI PLC

             (Exact name of Registrant as specified in its Charter)


                                   4th Floor
                                 Regents Place
                                338 Euston Road
                                    London
                                    NW1 3BT
                    (Address of principal executive offices)


(Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.)


                             Form 20-F X   Form 40-F


(Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange
Act of 1934.)


                                   Yes   No X


              CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS


In order to utilize the "Safe Harbor"  provisions  of the United States  Private
Securities  Litigation Reform Act of 1995 (the "Reform Act"),  Marconi plc ( the
"Company")  is  providing  the  following  cautionary   statement.   Except  for
historical information contained herein,  statements contained in this Report on
Form 6-K may constitute  "forward-looking  statements" within the meaning of the
Reform Act. The words "believe",  "anticipate",  "expect", "intend", "estimate",
"plan",  "assume",  "positioned",   "will",  "may",  "risk"  and  other  similar
expressions which are predictions of or indicate future events and future trends
which do not relate to historical matters identify  forward-looking  statements.
Reliance should not be placed on such statements  because they involve known and
unknown  risks,  uncertainties  and other factors which are in some cases beyond
the control of the Company,  together with its subsidiaries  (the "Group"),  and
may cause the actual results, performance or achievements of the Group to differ
materially  from  anticipated   future  results,   performance  or  achievements
expressed or implied by such forward-looking  statements (and from past results,
performance or  achievement).  Certain  factors that may cause such  differences
include  but are not  limited  to the  following:  (1) any major  disruption  in
production  at our key  facilities;  (2) changes in the  environmental,  tax and
other laws and regulations,  which, among other things,  could cause us to incur
substantial additional capital expenditures and operation and maintenance costs;
and (3) adverse  changes in the markets for our products,  including as a result
of increased  competition in the highly  competitive  international  markets for
such products. These and other risks, uncertainties and factors are discussed in
the  Company's  Registration  Statement  on Form F-1 and other  filings with the
Securities and Exchange  Commission,  including this Form 6-K.  Shareholders and
prospective  investors  are  cautioned  not to  place  undue  reliance  on these
forward-looking  statements which speak only as to the Company's  judgment as of
the date hereof.  Any such  forward-looking  statements are not intended to give
any  assurance as to future  results.  The Company  undertakes  no obligation to
publicly update or revise any of these  forward-looking  statements,  whether to
reflect new information or future events or circumstances or otherwise.





                                  MARCONI PLC
                              RESTRUCTURING UPDATE

Update on Initial Cash Distribution and Agreement in Principle for Settlement of
     ESOP Derivative Arrangements with Barclays Bank plc, Salomon Brothers
                        International Limited and UBS AG

  - GBP35 million settlement agreed in principle with Barclays Bank plc, Salomon
    Brothers International Limited and UBS AG in relation to potential claims
    under ESOP derivative arrangements, subject to relevant creditor approval
    and the Marconi Corporation Scheme of Arrangement becoming effective

  - Resultant "Day one" redemption of approximately GBP135 million (at 110 per
    cent of par value), of the Junior Notes (to be issued as part of the
    Restructuring), reducing the Junior Notes by approximately GBP123 million
  - Marconi Corporation is seeking to make an additional GBP20 million initial
    cash distribution in replacement for the surplus cash element of the excess
    cash mechanism outlined in the amended non-binding heads of terms
    announcement in December 2002
  - Proposed initial cash distribution therefore to increase from GBP165 million
    to GBP320 million (including GBP135 million "Day one" redemption of the
    Junior Notes) in addition to GBP95 million of interest accrued to 15 October
    2002 and already paid to financial creditors


London - 7th February 2003 - Marconi (MONI) today announces a significant
development towards completion of the financial restructuring (the
"Restructuring") of Marconi plc and its wholly owned subsidiary Marconi
Corporation plc ("Marconi Corporation").

The Group is pleased to announce that it has reached agreement in principle with
Barclays Bank plc, Salomon Brothers  International Limited and UBS AG (the "ESOP
Derivative  Providers"),  for a settlement of all potential  claims made against
Marconi plc and other Group companies relating to the previously  disclosed ESOP
derivative arrangements entered into during calendar year 2000.

Under the terms of the in principle settlement  arrangements,  which are subject
to definitive  documentation  and are conditional  upon the Marconi  Corporation
scheme of  arrangement  becoming  effective  and the  consent  of the  requisite
majorities of both the Syndicate  Banks and the ad hoc committee of bondholders,
Marconi  Corporation  will pay GBP35  million  together  with  costs to the ESOP
Derivative  Providers  in full and final  settlement  of all their ESOP  related
claims against the Marconi Group.

Payment  to the ESOP  Derivative  Providers  will be made  from  the  previously
disclosed  cash  retention of up to GBP170  million which was to be set aside by
Marconi Corporation as part of the Restructuring pending resolution of potential
liabilities  of  Group  companies  in  relation  to  the  Group's  ESOP  hedging
arrangements.  The balance of  approximately  GBP135  million  will be used upon
completion of the  Restructuring to redeem (in part) the Junior Notes at 110 per
cent  of face  value.  This  will  reduce  the  value  of the  Junior  Notes  by
approximately  GBP123  million.  Marconi is expecting to have  discussions  with
relevant  creditor groups regarding the potential impact the ESOP settlement may
have on the future capital structure of the Group.

The Boards of Marconi plc and Marconi  Corporation  believe that the  settlement
agreed in  principle  with the ESOP  Derivative  Providers  will have a positive
impact on the  overall  Restructuring  process and is in the best  interests  of
Marconi plc, Marconi  Corporation and their respective  stakeholders as a whole.
In reaching this conclusion,  the Boards of Marconi plc and Marconi  Corporation
have taken into account a number of factors,  including the merits of the claims
of the ESOP Derivative  Providers,  the desire to reduce the cost and expense of
continuing  litigation,  the potential  saving in the interest burden from which
the  Group  will  benefit  by  settling  at this  stage  (through  the "Day one"
reduction in the Junior Notes) and the benefits for the Schemes and certainty of
the "Day one" distribution that such a settlement will bring.

In addition to the ESOP settlement and the resulting  reduction in the amount of
the Junior  Notes,  Marconi  Corporation  is also seeking to make an  additional
GBP20 million  payment in the initial  amount of the cash to be  distributed  to
Scheme creditors upon completion of the Restructuring which will not result in a
reduction of the Junior  Notes.  This would  replace the surplus cash element of
the excess cash mechanism  outlined in the Group's  announcement  of 16 December
2002. These  arrangements  are subject to the approval of the relevant  creditor
groups.

The  settlement  with the ESOP  Derivative  Providers  and  their  consequential
exclusion  as scheme  creditors  in the Marconi plc scheme of  arrangement  will
reduce the level of total claims at Marconi plc. This  reduction,  combined with
the results of further due diligence that has been conducted on the  liabilities
at  Marconi  Corporation  and  Marconi  plc  means  that  the  current  level of
identified actual and contingent claims are estimated to be approximately GBP5.1
billion and GBP4.9 billion respectively.  In addition,  the ongoing Scheme costs
of Marconi plc are to be borne by Marconi plc out of its own  resources and from
any Scheme consideration it receives from Marconi Corporation. Work is currently
ongoing to quantify  this  amount,  which is expected to be in the range of GBP5
million to GBP15 million.  More precise  details will be provided in the Marconi
plc Scheme documentation.

The Boards of Marconi plc and Marconi Corporation are currently  considering the
impact  of  these   matters  on  the  timetable   for   implementation   of  the
Restructuring,   but  believe  that  posting  of  the  Scheme  documentation  in
connection with the  Restructuring  will still occur before the end of Marconi's
financial year (March 2003).

ENDS/...



Notes to Editors

Background to ESOP Arrangements

As previously  disclosed,  Marconi plc issued share  options to Group  employees
under a number of different  employee share option plans.  In order to hedge the
potential  cost of acquiring  shares in order to satisfy the Group's  obligation
under such plans,  the trustee of the Marconi Group share option scheme  entered
into  contracts  (ESOP  derivative  transactions)  guaranteed  by Marconi plc to
purchase  shares in the  future at prices  which  were  fixed at the date of the
contract.

It had previously been expected that, as part of the  Restructuring,  a total of
up to GBP170  million was to be set aside  pending  determination  of any claims
which  the  ESOP  Derivative  Providers  may  have  had  against  Marconi  Group
companies.  The ESOP  arrangements  provided  for monies to be set aside for the
benefit of the participating  ESOP Derivative  Providers only to the extent that
it was  subsequently  found by a court, or agreed between the relevant  parties,
that the participating ESOP Derivative Providers would have been able to recover
amounts from Marconi plc and existing  and past  subsidiaries  of Marconi  under
existing inter company funding  arrangements  relating to the Group's prior ESOP
hedging arrangements.

The ESOP arrangements did not have the effect of favouring claims which the ESOP
Derivative  Providers  might  otherwise have had against  Marconi under existing
guarantees given by it in favour of the ESOP Derivative  Providers.  Rather, the
ESOP arrangements implemented a mechanism to resolve uncertainties as to whether
and to what  extent  Marconi,  Marconi  Corporation,  the trustee of the Marconi
Group share option scheme or the  participating  ESOP  Derivative  Providers had
claims against  operating and other  companies  within the Marconi  Group.  Such
companies  were  or  are  under  the  ownership  of  Marconi   Corporation  and,
structurally, any such claims of the ESOP Derivative Providers, if determined to
be valid, may have ranked ahead of claims against Marconi Corporation.

Implementation of the prospective  settlement with the ESOP Derivative Providers
will require these arrangements to be amended.

About Marconi plc

Marconi  plc is a global  telecommunications  equipment  and  solutions  company
headquartered  in London.  The  company's  core  business  is the  provision  of
innovative and reliable optical  networks,  broadband  routing and switching and
broadband access technologies and services. The company's customer base includes
many of the world's largest telecommunications operators.

The company is listed on the London Stock Exchange under the symbol MONI.
Additional information about Marconi can be found at www.marconi.com.

Copyright (c) 2002 Marconi plc. All rights reserved. All brands or product names
are trademarks of their respective holders.

Contacts

Name:     David Beck / Joe Kelly                Heather Green

Title:     Public Relations                     Investor Relations

Phone:     +44 (0) 207 306 1771                 +44 (0) 207 306 1735

+44 (0) 207 306 1490

joe.kelly@marconi.com                           heather.green@marconi.com



Cautionary statement regarding forward-looking statements

In order to utilize the "Safe Harbor" provision of the U.S. Private Securities
Litigation Reform Act of 1995, Marconi plc ("the Company") is providing the
following cautionary statement. Except for reported financial results or other
historical information, certain statements in this press release are
forward-looking statements, including, but not limited to, statements that are
predictions of or indicate future events, trends, plans or objectives. Reliance
should not be placed on such statements because, by their nature, they are
subject to known and unknown risks and uncertainties and can be affected by
other factors which are beyond the control of the Company and its subsidiaries,
and may cause actual results, performance and achievements to differ materially
from anticipated future results, performance and achievements expressed or
implied in the forward-looking statements (and from the past results,
performance or achievement). Although not exhaustive, the following factors
could cause such differences: any major disruption in production at our key
facilities; changes in the environmental, tax and other laws and regulations,
which, among other things, could cause us to incur substantial additional
capital expenditures and operation and maintenance costs; and adverse changes in
the markets for our products, including as a result of increased competition in
the highly competitive international markets for such products. These factors
and other factors that could effect these forward-looking statements are
described in the Company's Form 20-F report and Form 6-K reports filed with the
U.S. Securities and Exchange Commission. The Company disclaims any obligation to
publicly update or revise these forward-looking statements, whether to reflect
new information or future events or circumstances or otherwise.

                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned, thereunto duly authorized.


                                       MARCONI PLC



                                       By:     ____M Skelly____

                                       Name:   M Skelly
                                       Title:  Secretary


Date:February 7 2003