Holding(s) in Company

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:

Tanfield Group 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:

Prudential plc group of companies

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

Please see below

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

08 September 2010

6. Date on which issuer notified:

09 September 2010

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

14% - 13%

Registered Holder

Holding

Voting Rights

% Voting Rights

Prudential plc

10,154,020

13.70

Total Notifiable Interest

Pruclt HSBC GIS Nom(UK) PPL AC

1,179,441

1,179,441

Nortrust Noms Ltd A/C PUR01

1,110,087

1,110,087

Nortrust Noms Ltd

21,897

21,897

Nortrust Noms Ltd A/C PUF01

68,793

68,793

Pruclt HSBC Nom(UK) Pac AC

1,389,445

1,389,445

Nortrust Noms Ltd A/C PUI01

5,661

5,661

Nortrust Nominee Ltd. A/C MKK01

6,378,696

6,378,696

M&G Group Limited

10,154,020

13.70

Pruclt HSBC GIS Nom(UK) PPL AC

1,179,441

1,179,441

Nortrust Noms Ltd A/C PUR01

1,110,087

1,110,087

Nortrust Noms Ltd

21,897

21,897

Nortrust Noms Ltd A/C PUF01

68,793

68,793

Pruclt HSBC GIS Nom(UK) PAC AC

1,389,445

1,389,445

Nortrust Noms Ltd A/C PUI01

5,661

5,661

Nortrust Nominee Ltd A/C MKK01

6,378,696

6,378,696

M&G Investment Management Limited

10,154,020

13.70

Pruclt HSBC GIS Nom(UK) PPL AC

1,179,441

1,179,441

Nortrust Noms Ltd A/C PUR01

1,110,087

1,110,087

Nortrust Noms Ltd

21,897

21,897

Nortrust Noms Ltd A/C PUF01

68,793

68,793

Pruclt HSBC GIS Nom(UK) PAC AC

1,389,445

1,389,445

Nortrust Noms Ltd A/C PUI01

5,661

5,661

Nortrust Nominee Ltd A/C MKK01

6,378,696

6,378,696

M&G Limited

10,154,020

13.70

Pruclt HSBC GIS Nom(UK) PPL AC

1,179,441

1,179,441

Nortrust Noms Ltd A/C PUR01

1,110,087

1,110,087

Nortrust Noms Ltd

21,897

21,897

Nortrust Noms Ltd A/C PUF01

68,793

68,793

Pruclt HSBC GIS Nom(UK) PAC AC

1,389,445

1,389,445

Nortrust Noms Ltd A/C PUI01

5,661

5,661

Nortrust Nominee Ltd A/C MKK01

6,378,696

6,378,696

M&G Securities Limtied

6,378,696

8.61

Nortrust Nominee Ltd A/C MKK01

6,378,696

6,378,696

The Prudential Assurance Company Limited

2,568,886

3.46

PRUCLT HSBC GIS NOM(UK) PPL AC

1,179,441

1,179,441

PRUCLT HSBC GIS NOM(UK) PAC AC

1,389,445

1,389,445

8. Notified details:

A: Voting rights attached to shares

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

Direct

Direct

Indirect

Direct

Indirect

GB00B4QHFM95

10,404,020

10,404,020

10,154,020

10,154,020

13.70%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

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 Instrumentsi

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration datei

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

10,154,020

13.70%

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

Prudential plc (parent Company)

M&G Group Limited (wholly owned subsidiary of Prudential plc)

M&G Limited (wholly owned subsidiary of M&G Group Limited)

M&G Investment Management Limited (wholly owned subsidiary of M&G Limited)

M&G Securities Limited (wholly owned subsidiary of M&G Limited)

The Prudential Assurance Company Limited (wholly owned subsidiary of Prudential plc)

Proxy Voting:

10. Name of the proxy holder:

N/A

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

N/A

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

N/A

13. Additional information:

14. Contact name:

Ryan Dowling / Mark Thomas

M&G Investment Management Limited

15. Contact telephone number:

020 7548 2979 / 020 7548 3266