Holding(s) in Company

TR-1: Notifications of Major Interests in Shares

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

XCHANGING PLC

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

An acquisition or disposal of voting rights

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

Yes

Other (please specify):

3. Full name of person(s) subject to the notification 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 on which the threshold is crossed or reached: v

23 April 2010

6. Date on which issuer notified:

27 April 2010

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

N/A

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 shares of 5P each

23,539,226

23,539,226

23,539,226

9.83

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

Not applicable

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

Not applicable

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

23,539,226

9.83

9. Chain of controlled undertakings through which the voting rights and/or the financial 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, LP, 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"). GAP LP is the sole shareholder of GAP-Xchange Partners, L.L.C., SCA, a Luxembourg partnership limited by shares ("GAP-Xchange SCA") 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"), Members of GapStar and Managing Members of GAP-Xchange 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, GAP-Xchange, GAP-Xchange SCA, 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, Mark F. Dzialga, William O. Grabe, Abhay Havaldar, David C. Hodgson, Rene M. Kern, Jonathan Korngold, Christopher G. Lanning, Jeff Leng, Anton J. Levy, Adrianna Ma, Marc F. McMorris, Thomas J. Murphy, Matthew Nimetz, Fernando Oliveira, Ranjit Pandit, Andrew C. Pearson, Raul R. Rai, David A. Rosenstein, Sunish Sharma, Tom C. Tinsley, Philip P. Trahanas, and Florian P. Wendelstadt.

For purposes of DTR 5.2.1(e), prior to [ ] April 2010, one of the GA Group entities, GAP LP, held 13,616,745 ordinary shares of 5p each (the "Ordinary Shares") of Xchanging plc (the "Company") which represents 5.69% of the voting power in the Company. As a result of a reorganisation of certain entities within the GA Group on [ ] April 2010, GAP LP holds, at the date of this notification 16,714,656 Ordinary Shares, which represent 6.98% of the voting power in the Company.

The GA Group is at the date of this notice the beneficial owner of 23,539,226, in aggregate, Ordinary Shares of the Company. As the Managing Directors of GA LLC possess the sole power to vote and direct the disposition of the shares held by the GA Group, GA LLC has the indirect power to control, in aggregate, 23,539,226 of the Ordinary Shares, which reflects 9.83% of the voting power.

Proxy Voting:

10. Name of the proxy holder:

Not applicable

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:

Christopher G. Lanning General Atlantic LLC 55 East 52nd Street, 32nd Floor New York New York 10055

15. Contact telephone number:

(212) 715-4040

C: Additional information

For notes on how to complete form TR-1 please see the FSA website.