ABC.L Regulatory News (ABC)

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

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

Abcam

2 Reason for the notification (please tick the appropriate box or boxes):

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):

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

AEGON UK Group of Companies

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

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

22nd February 2010

6. Date on which issuer notified:

23rd February 2010

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

6%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of shares

if possible using the 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

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00B0LWCX12

2,149,796

2,149,796

2,149,796

2,009,895

139,901

5.60

0.39

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date xiii

Exercise/ Conversion Period xiv

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

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

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date xvii

Exercise/ Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Contract for Difference

n/a

n/a

n/a

11,056

Nominal

Delta

0.03%

n/a

Total (A+B+C)

Number of voting rights

Percentage of voting rights

2,160,852

6.02%

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

AEGON UK Group of companies - parent undertaking of:

AEGON Asset Management UK plc

AEGON Investment Management UK ltd.

AEGON ICVC

Proxy Voting:

10. Name of the proxy holder:

AEGON UK Group of Companies

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:

AEGON UK Group of Companies consists of:

AEGON Asset Management UK plc

AEGON Investment Management UK ltd

AEGON ICVC

14. Contact name:

Miranda Beacham

15. Contact telephone number:

0131 549 3460

Note: Annex should only be submitted to the FSA not the issuer

Annex: Notification of major interests in share

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

Full name

(including legal form of legal entities)

AEGON Asset Management UK plc

Contact address

(registered office for legal entities)

AEGON House,

3 Lochside Avenue,

Edinburgh Park,

Edinburgh,

EH12 9SA

Phone number & email

0870 60 90 101

Other useful information

(at least legal representative for legal persons)

Ian G Young, Company secretary,

0131 549 6398

B: Identity of the notifier, if applicable

Full name

Miranda Beacham

Contact address

AEGON House,

3 Lochside Avenue,

Edinburgh Park,

Edinburgh,

EH12 9SA

Phone number & email

0131 549 3460

miranda.beacham@aegon.co.uk

Other useful information

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

C: Additional information

For notes on how to complete form TR-1 please see the FSA website.