G4S plc UK : Holding(s) in Company

For filings with the FSA include the annex
For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESⁱ

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: ⁱⁱ		G4S plc
2 Reason for the notification (please tick the appropriate box or boxes):
An acquisition or disposal of voting rights			x
An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments
An event changing the breakdown of voting rights
Other (please specify):
3. Full name of person(s) subject to the notification obligation: ⁱⁱⁱ	Invesco Limited
4. Full name of shareholder(s) (if different from 3.):^iv
5. Date of the transaction and date on which the threshold is crossed or reached: ^v	31 October 2012
6. Date on which issuer notified:	1 November 2012
7. Threshold(s) that is/are crossed or reached: ^{vi, vii}	10%, 11%

8. Notified details:

A: Voting rights attached to shares ^{viii, ix}

Class/type of
shares

if possible using
the ISIN CODE

Situation previous
to the triggering
transaction

Resulting situation after the triggering transaction

Number
of
Shares

Number
of
Voting
Rights

Number
of shares

Number of voting
rights

% of voting rights ^x

Direct

Direct ^xi

Indirect ^xii

Direct

Indirect

Ordinary 25p shares

142,071,038

159,412,894

11.30%

GB00B01FLG62

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial
instrument

Expiration
date ^xiii

Exercise/
Conversion Period ^xiv

Number of voting
rights that may be
acquired if the
instrument is
exercised/ converted.

% of voting
rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments ^{xv, xvi}

Resulting situation after the triggering transaction

Type of financial
instrument

Exercise price

Expiration date ^xvii

Exercise/
Conversion period ^xviii

Number of voting rights instrument refers to

% of voting rights ^{xix, xx}

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

159,412,894

11.30%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: ^xxi
Invesco Asset Management Limited - 42,593,194 Invesco Fund Managers Limited - 111,606,080 Invesco Asset Management Japan Limited - 122,869 Invesco Asset Management GmbH Germany - 199,719 Invesco PowerShares Capital Management Ireland - 71,349 Invesco PowerShares Capital Management LLC - 30,514 Invesco Asset Management Ltd & Invesco Hong Kong Ltd - 773,043 Invesco GT Management S.A - 31,691 Invesco Asset Management Ltd & Invesco GT Management - 3,729,985 Invesco Asset Management Ltd & Invesco Asset Management Ireland - 213,748 Invesco Asset Management Ltd & Invesco Asset Management Japan Ltd - 11,206 Invesco Hong Kong Limited - 13,500 Invesco Advisers, Inc & Invesco Asset Management Ltd - 15,996

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. Contact name:	Peter David, Company Secretary
15. Contact telephone number:	+ 44(0)1293 554584