Assetco Regulatory News (ASTO)

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:

AssetCo PLC

2: Reason for notification (yes/no)

An acquisition or disposal of voting rights

yes

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

no

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

no

An event changing the breakdown of voting rights

no

Other (please specify):

no

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

obligation:

 Standard Life Investments Ltd

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

 Vidacos Nominees

5. Date of the transaction (and date on which the threshold

is crossed or reached):

15 April 2010

6. Date on which issuer notified:

16 April 2010

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

4% direct

8: Notified Details

A: Voting rights attached to shares

Class/type of share If possible use ISIN code

GB0033997387

Situation previous to the triggering transaction

Number of shares

Number of voting rights

3,447,444

3,447,444

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

3,847,444

3,847,444

4.241%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 3,847,444

4.241%

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

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:

AssetCo plc

 +44 (0) 20 8515 3999

John Shannon, Chief Executive Officer

James Collins, Investor Relations

Arden Partners plc

+44 (0)20 7614 5932

Richard Day

Adrian Trimmings

Pelham Bell Pottinger

+44 (0) 20 7337 1500

Alex Walters

Francesca Tuckett