Holding(s) in Company

RNS Number:0724N
Celltech Group PLC
02 July 2003

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Name of company
Celltech Group plc

2. Name of shareholder having a major interest
AMVESCAP PLC

3. Please state whether notification indicates that it is in respect of holding
of the shareholder named in 2 above or in respect of a non-beneficial interest
or in the case of an individual holder if it is a holding of that person's
spouse or children under the age of 18
As in 2 above

4. Name of the registered holder(s) and, if more than one holder, the number of
shares held by each of them

Vidacos Nominees Limited                               24,604,019
HSBC Nominees Limited                                  2,927,260
Chase Nominees Limited                                 1,335,690
Bank of New York Nominees Limited                      978,300
Northern Trust Nominees Limited                        431,639
BNP Paribas Securities Services Nominees Limited       158,020
Bank of New York Nominees Limited A/C CDC IXIS         81,400
Credit Agricole Investor Services Limited              53,514
CM Investment Nominees Limited                         10,590

5. Number of shares / amount of stock acquired
2,364,222 (since last notification)

6. Percentage of issued class
0.85%

7. Number of shares / amount of stock disposed
N/A

8. Percentage of issued class
N/A

9. Class of security
Ordinary 50p shares

10. Date of transaction
30 June, 2003

11. Date company informed
2 July, 2003

12. Total holding following this notification
30,580,432

13. Total percentage holding of issued class following this notification
11.01%

14. Any additional information
The above holding includings the following notifiable holding:

INVESCO Perpetual High Income Fund holds 10,491,000 shares (3.77%) registered in the name of Vidacos
Nominees Limited.

15. Name of contact and telephone number for queries
Cheryl Cramer Tel. [phone]

16. Name and signature of authorised company official responsible for making
this notification
J A D Slater

Date of notification
2 July, 2003

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for loss of business or loss of profits) arising in contract, tort or otherwise
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                      This information is provided by RNS
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END

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