Thruvision Grp Regulatory News (THRU)

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

Digital Barriers 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:

BT Pension Scheme Trustees Limited as trustee of the BT Pension Scheme. See Section 9 for further information.

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

N/A

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

14 December 2010

6. Date on which issuer notified:

15 December 2010

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

6%

8. Notified details:

A: Voting rights attached to shares

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

Direct

Direct

Indirect

Direct

Indirect

GB00B627R876

B627R87

1,441,750

1,441,750

973,250

973,250

694,500

3.972%

2.802%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/ConversionPeriod

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

% of votingrights

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

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate

Exercise/Conversionperiod

Number of votingrights instrumentrefers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

1,667,750

6.73%

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

BT Pension Scheme Trustees Limited, as trustee of the BT Pension Scheme ("BTPS") is the parent undertaking of Britel Fund Nominees Limited and Britel Fund Trustees Limited, which is the parent undertaking of Hermes Fund Managers Limited ("HFML"). HFML is the parent

undertaking of:

1. Hermes Equity Ownership Services Limited ("HEOS") (voting rights 2.802%)*

2. Hermes Investment Management Limited ("HIML") (voting rights: 3.972%)

* This notification is also being made in respect of HEOS, which is an indirect holder of shares for the purpose of DTR5.2.1(h). The voting rights include the following: (i) all of the voting rights of the underlying clients of HEOS for whom it provides voting services; (ii) all of the voting rights attaching to the direct shareholding of BTPS; (iii) all of the voting rights attaching to shares managed by HIML; and (iv) the voting rights attaching to the direct shareholding of BTPS that are managed by HSL.

Please see Section 13 for further information.

Proxy Voting:

10. Name of the proxy holder:

See Comment in Section 13.

11. Number of voting rights proxy holder will cease to hold:

See Comment in Section 13.

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

See Comment in Section 13.

13. Additional information:

HEOS hold the voting rights under a standing proxy contained in agreements for the provision for voting services to various underlying clients for the purposes of DTR 5.2.1(h), which includes all of the shares owned directly by BTPS, all of the voting rights attaching to shares managed by HIML and the voting rights attaching to the direct shareholding of BTPS that are managed by HSL.

HIML hold the voting rights under a standing proxy contained in investment management agreements with various underlying clients (which may include BTPS) for the purposes of DTR 5.2.1(h).

HSL hold the voting rights under a standing proxy contained in investment management agreements with various underying clients (which may include BTPS) for the purposes of DTR 5.2.1(h).

This disclosure is made by BT Pension Scheme Trustees Limited as trustee of the BT Pension Scheme, which is the ultimate parent undertaking for the purposes of DTR 5.2.1 (e).

14. Contact name:

Valerie Davidson (v.davidson@hermes.co.uk)

15. Contact telephone number:

020 7680 2177