Holding(s) in Company

For filings with the FSA include the annex

For filings with issuer exclude the annex

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:

STV GROUP PLC

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

Yes

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

An event changing the breakdown of voting rights

Other (please specify):_Share issue by company_____________

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

Hanover I Master Fund LP where the shares are registered in the name of Vidacos Nominees Limited

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

As above

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

30 March 2011

6. Date on which issuer notified:

4 April 2011

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

5%, 4%, 3%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use 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

Percentage of voting rights

Direct

Indirect

Direct

Indirect

GB0004325402 2,154,496 2,154,496 938,496 38,496 2.45%

B: 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

Total (A+B)

Number of voting rights

Percentage of voting rights

938,496

2.45%

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

Vidacos Nominees Limited controls the total voting rights; being the vehicle managed by the Prime Broker to Hanover I Master Fund LP.

Proxy Voting:

10. Name of 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:

Jane E A Tames, Company Secretary,

STV Group plc

15. Contact telephone name:

0141 300 3074