Edgar Filing: HSBC HOLDINGS PLC

FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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

For the month of April, 2007

HSBC Holdings plc

42nd Floor, 8 Canada
Square, London E14 5HQ, England

(Indicate by check mark whether the registrant files or will file annual
reports under cover of 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

(If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82- ..............)

HSBC Holdings plc (the "Company") received by post on 18 April 2007: the
following notification from Barclays PLC.

TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached (ii):

HSBC Holdings plc

2. Reason for the notification:

An acquisition or disposal of voting rights

3. Full name of person(s) subject to the notification obligation (iii):

Barclays PLC

4. Full name of shareholder(s) (if different from 3.) (iv):

1. Barclays Bank France SA
2. Barclays Bank PLC
3. Barclays Bank SA
4. Barclays Bank Trust Company Ltd
5. Barclays Capital Inc
6. Barclays Capital Securities Ltd
7. Barclays Global Investors Canada Ltd
8. Barclays Global Investors Japan Ltd
9. Barclays Global Investors Japan Trust & Banking
10. Barclays Global Investors Ltd
11. Barclays Life Assurance Co Ltd
12. Barclays Private Bank & Trust (Cayman) Ltd
13. Barclays Private Bank and Trust Ltd
14. Barclays Private Bank Ltd
15. Barclays Stockbrokers Ltd
16. Gerrard Ltd

5. Date of the transaction (and date on which the threshold is crossed or
reached if different) (v):

16 April 2007

6. Date on which issuer notified:

17 April 2007

7. Threshold(s) that is/are crossed or reached:

1% to 4%

8. Notified details

A: Voting rights attached to shares

Class/type of shares if possible Situation previous to the Triggering transaction (vi)
using the ISIN CODE

Number of shares Number of voting Rights (viii)

GB0005405286 158,254,863 158,254,863

Resulting situation after the triggering transaction (vii)

Class/type of shares if Number of shares Number of voting rights (ix) % of voting rights
possible using the ISIN CODE

Direct (x) Indirect (xi) Direct Indirect

GB0005405286 518,233,657 0 518,233,657 0.00 4.47%

B: Financial Instruments

Resulting situation after the triggering transaction (xii)

Type of Expiration Date (xiii) Exercise/Conversion Number of voting rights % of voting rights
financial Period/ Date (xiv) that may be acquired if the
instrument instrument is exercised/
converted.

0 0.00

Total (A+B)
Number of voting rights % of voting rights

518,233,657 4.47%

9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable (xv):

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

14. Name of contact and telephone number for queries

Geoff Smith

Tel: 020 71162913

15. Name and signature of duly authorised officer of the listed company
responsible for making this notification

Paul Stafford, Deputy Group Company Secretary
Tel: 0207 992 1509

16. Date of notification

18 April 2007

Notes to the Forms

(i) This form is to be sent to the issuer or underlying issuer and to be filed
with the competent authority.

(ii) Either the full name of the legal entity or another method for identifying
the issuer or underlying issuer, provided it is reliable and accurate.

(iii) This should be the full name of (a) the shareholder; (b) the person
acquiring, disposing of or exercising voting rights in the cases provided for in
DTR5.2.1 (b) to (h); (c) all the parties to the agreement referred to in
DTR5.2.1 (a), or (d) the direct or indirect holder of financial instruments
entitled to acquire shares already issued to which voting rights are attached,
as appropriate.

In relation to the transactions referred to in points DTR5.2.1 (b) to (h), the
following list is provided as indication of the persons who should be mentioned:

- in the circumstances foreseen in DTR5.2.1 (b), the person that acquires the
voting rights and is entitled to exercise them under the agreement and the
natural person or legal entity who is transferring temporarily for consideration
the voting rights;

- in the circumstances foreseen in DTR 5.2.1 (c), the person holding the
collateral, provided the person or entity controls the voting rights and
declares its intention of exercising them, and person lodging the collateral
under these conditions;

- in the circumstances foreseen in DTR5.2.1(d), the person who has a life
interest in shares if that person is entitled to exercise the voting rights
attached to the shares and the person who is disposing of the voting rights when
the life interest is created;

- in the circumstances foreseen in DTR5.2.1 (e), the parent undertaking and,
provided it has a notification duty at an individual level under DTR 5.1, under
DTR5.2.1 (a) to (d) or under a combination of any of those situations, the
controlled undertaking;

- in the circumstances foreseen in DTR5.2.1 (f), the deposit taker of the
shares, if he can exercise the voting rights attached to the shares deposited
with him at his discretion, and the depositor of the shares allowing the deposit
taker to exercise the voting rights at his discretion;

- in the circumstances foreseen in DTR5.2.1 (g), the person that controls the
voting rights;

- in the circumstances foreseen in DTR5.2.1 (h), the proxy holder, if he can
exercise the voting rights at his discretion, and the shareholder who has given
his proxy to the proxy holder allowing the latter to exercise the voting rights
at his discretion.

(iv) Applicable in the cases provided for in DTR 5.2.1 (b) to (h). This should
be the full name of the shareholder who is the counterparty to the natural
person or legal entity referred to in DTR5.2.

(v) The date of the transaction should normally be, in the case of an on
exchange transaction, the date on which the matching of orders occurs; in the
case of an off exchange transaction, date of the entering into an agreement.

The date on which threshold is crossed should normally be the date on which the
acquisition, disposal or possibility to exercise voting rights takes effect (see
DTR 5.1.1R (3)). For passive crossings, the date when the corporate event took
effect.

(vi) Please refer to the situation disclosed in the previous notification, In
case the situation previous to the triggering transaction was below 3%, please
state 'below 3%'.

(vii) If the holding has fallen below the minimum threshold , the notifying
party should not be obliged to disclose the extent of the holding, only that the
new holding is less than 3%.

For the case provided for in DTR5.2.1(a), there should be no disclosure of
individual holdings per party to the agreement unless a party individually
crosses or reaches an Article 9 threshold. This applies upon entering into,
introducing changes to or terminating an agreement.

(viii) Direct and indirect

(ix) In case of combined holdings of shares with voting rights attached 'direct
holding' and voting rights 'indirect holdings', please split the voting rights
number and percentage into the direct and indirect columns-if there is no
combined holdings, please leave the relevant box blank.

(x) Voting rights to shares in respect of which the notifying party is a direct
shareholder (DTR 5.1)

(xi) Voting rights held by the notifying party as an indirect shareholder (DTR
5.2.1)

(xii) If the holding has fallen below the minimum threshold, the notifying
party should not be obliged to disclose the extent of the holding, only that the
new holding is below 3%.

(xiii) date of maturity / expiration of the financial instrument i.e. the date
when the right to acquire shares ends.

(xiv) If the financial instrument has such a period-please specify the period-
for example once every three months starting from the (date)

(xv) The notification should include the name(s) of the controlled undertakings
through which the voting rights are held. The notification should also include
the amount of voting rights and the percentage held by each controlled
undertaking, insofar as individually the controlled undertaking holds 5% or
more, and insofar as the notification by the parent undertaking is intended to
cover the notification obligations of the controlled undertaking.

(xvi ) This annex is only to be filed with the competent authority.

(xvii) Whenever another person makes the notification on behalf of the
shareholder or the natural person/legal entity referred to in DTR5.2 and DTR5.3

SIGNATURE

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.

HSBC Holdings plc

By:
Name: P A Stafford
Title: Assistant Group Secretary
Date: 18 April, 2007