INFA.L Regulatory News (INFA)

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:

Infrastrata 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

Other (please specify):

Change in Issued Share Capital

X

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

Bluehone Investors LLP

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

See box 9 below

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

21/12/2010

6. Date on which issuer notified:

22/12/2010

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

5%

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

GB00B28YMP66

3,696,513

3,696,513

3,696,513

3,696,513

4.98%

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

3,696,513

4.98%

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 proxy holder:

Bluehone Investors LLP

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:

Peter Fraser, F&C Asset Management plc (as Administratorof Bluehone Investors LLP)

15. Contact telephone name:

0131 718 1051

Annex: Notification of major interests in shares

A: Identity of the persons or legal entity subject to the notification obligation

Full name

(including legal form of legal entities)

Infrastrata Plc

Contact address

(registered office for legal entities)

80 Hill Rise, Richmond, TW10 6UB, United Kingdom

Phone number & email

Phone 0208 3321200

Email: venessa.trythall@infrastrata.co.uk

Other useful information

(at least legal representative for legal persons)

B: Identity of the notifier, if applicable

Full name

Peter Fraser, F&C Asset Management plc (as Administratorof Bluehone Investors LLP)

Contact address

80 George Street, Edinburgh EH2 3BU

Phone number & email

0131 718 1051

Peter.fraser@fandc.com

Other useful information

(e.g. functional relationship with the person or legal entity subject to the notification obligation)

C: Additional information