Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached: ii

XCHANGING PLC

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

S

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 thenotification obligation: iii

General Atlantic LLC

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

(1) General Atlantic Partners (Bermuda), L.P.

(2) General Atlantic Partners 55, L.P.

(3) GAP-W International, LP

(4) GapStar, LLC

(5) GAP Coinvestment Partners, L.P.

(6) GAP Coinvestment Partners II, L.P.

(7) GAPCO GmbH & Co. KG

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

May 28, 2012

6. Date on which issuer notified:

May 30, 2012

7. Threshold(s) that is/are crossed orreached: vi, vii

less than 3%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

Ordinary shares of 5P each

22,889,226

22,889,226

0

0

0

0

0%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

Not applicable

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

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Not applicable

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

0

0%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi

GAP (Bermuda) Limited, a Bermuda exempted company ("GAP (Bermuda) Limited"), is the general partner of General Atlantic GenPar (Bermuda), L.P., a Bermuda limited partnership ("GA GenPar Bermuda"). GA GenPar Bermuda is the general partner of General Atlantic Partners (Bermuda), L.P., a Bermuda limited partnership ("GAP LP"), and GAP-W International, L.P., a Bermuda limited partnership ("GAP-W International"). General Atlantic LLC, a Delaware limited liability company ("GA LLC"), is the general partner of General Atlantic Partners 55, L.P., a Delaware limited partnership ("GAP 55"). GAPCO Management GmbH, a German corporation ("GAPCO Management"), is the general partner of GAPCO GmbH & Co. KG, a German limited partnership ("GAPCO KG").

The Managing Directors of GA LLC are the executive officers and directors of GAP (Bermuda) Limited. The General Partners of GAP Coinvestment Partners, L.P., a Delaware limited partnership ("GAPCO"), and GAP Coinvestment Partners II, L.P., a Delaware limited partnership ("GAPCO II"), and members of GapStar, LLC are certain Managing Directors of GA LLC. In addition, the Managing Directors of GA LLC make voting and investment decisions with respect to GAPCO Management and GAPCO KG. GAP (Bermuda) Limited, GA GenPar Bermuda, GAP LP, GAP-W International, GA LLC, GAP 55, GAPCO Management, GAPCO KG, GAPCO and GAPCO II (collectively, the "GA Group") are all under common control.

The Managing Directors of GA LLC are Steven A. Denning (Chairman), William E. Ford (CEO), John D. Bernstein, J. Frank Brown, Gabriel P. Caillaux, Alexander A. Chulack, Mark F. Dzialga, Cory A. Eaves, Martin Escobari, Abhay Havaldar, Patricia L. Hedley, David C. Hodgson, Jing Hong, Rene M. Kern, Jonathan Korngold, Christopher G. Lanning, Jeff Leng, Anton J. Levy, Adrianna Ma, John C. Morris, Thomas J. Murphy, Ranjit Pandit, Andrew C. Pearson, Brett B. Rochkind, David A. Rosenstein, and Philip P. Trahanas.

On May 28, 2012, the GA Group held, in total, 22,889,226 ordinary shares of 5p each (the "Ordinary Shares") of Xchanging plc (the "Company"), which represented 9.55% of the voting power in the Company. As a result of the market sales on May 28, 2012, the GA Group no longer holds any Ordinary Shares in the Company.

Proxy Voting:

10. Name of the proxy holder:

Not applicable

11. Number of voting rights proxy holder will ceaseto hold:

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

13. Additional information:

14. Contact name:

Christopher G. Lanning

General Atlantic LLC

55 East 52nd Street, 32nd Floor

New York, New York 10055

15. Contact telephone number:

001-212-715-4040