Holding(s) in Company

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

Pure Wafer 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

x

Other (please specify):

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

The Royal Bank of Scotland Group plc

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

The Royal Bank of Scotland plc

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

15/10/2013

6. Date on which issuer notified:

17/10/2013

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

7%

8. Notified details:

A: Voting rights attached to shares viii, ix

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 x

Direct

Direct xi

Indirect xii

Direct

Indirect

Ord GBP 0.02

0

0

0

0

0%

GB00B02QYY79

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

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

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Warrants

2p

31/12/2029

At any time until 5pm on 31/12/2029

21,919,346

Nominal

Delta

7.95%

Total (A+B+C)

Number of voting rights

Percentage of voting rights

21,919,346

7.95%

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

The Royal Bank of Scotland Group plc (7.95%)

The Royal Bank of Scotland plc (7.95%)

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will ceaseto hold:

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

13. Additional information:

This Notification is based upon the Voting Rights figure of 275,707,925 obtained from your Regulatory Announcement dated 11th October 2013 confirming admission to trading on AIM on 15th October 2013.

14. Contact name:

Richard Hopkins

15. Contact telephone number:

0207 672 0354