CAP Clean Air

    FORM 8.1/8.3

Lodge with a RIS or Newstrack, if appropriate, and the Takeover Panel. Use separate form for
each class of securities in which dealings have been made.

Date of Disclosure 21 September 2004

DISCLOSURE UNDER RULES 8.1(a), 8.1(b) (i) and 8.3 OF THE CITY CODE ON TAKEOVERS AND MERGERS

Date of Dealing 20 September 2004

Dealing in CAPITAL RADIO

(1) Class of securities (eg ordinary shares) ORD GBP 0.025

(2) Amount bought Amount sold Price per unit

Barclays PLC is party to certain CFD transactions (see below)

(3) Resultant total of the same class owned or controlled
   (and percentage of class)         1,698,991            (1.99%)

(4) Party making disclosure Barclays PLC

(5) EITHER (a) Name of purchaser / vendor (Note 1)
           (b) if dealing for discretionary clients, name of fund management organisation
           Barclays PLC

(6) Reason for disclosure (Note 2)
    (a) associate of (i) offeror (Note 3) NO
                    (ii) offeree          NO

Specify which category or categories of associate (1-8 overleaf)

    (b) Rule 8.3 (I.e disclosure because of ownership or control of 1% or more of the class
        of relevant securities dealt in) YES

Signed for and on behalf of the party named in (4) above

Geoff Smith
Telephone and extension number
0207 699 2305

Form 8 Enclosure

A purchaser of a CFD will realise a gain if the price of the underlying security goes up. A seller
of a CFD will realise a gain if the price of the underlying security goes down. The CFD contracts
are open ended and there is no rollover into new contracts.

Contracts for Differences Date of Disclosure : 21 September 2004

CAPITAL RADIO

                      Open Date   Buy/Sell   Quantity   Open Price   Close Price

CAPITAL RADIO   CFD   19/11/2001  B          6,098      8.1736
                      22/11/2001  B         21,168      7.8839
                      01/03/2002  B         32,431      7.2000
                      07/03/2002  S         13,063      8.4750
                      08/03/2002  S         28,880      8.1377
                      14/03/2002  S          1,785      8.1651
                      15/03/2002  S          1,766      8.1250
                      03/04/2002  S         14,203      8.3675
                      01/08/2002  B         60,482      5.4892
                      07/02/2003  S         30,303      4.0500
                      25/02/2003  S         30,179      3.9980
                      24/11/2003  S         36,750      4.7800
                      03/12/2003  S         10,170      5.0358
                      03/12/2003  S         10,101      5.0274
                      03/12/2003  S         47,227      5.0274
                      03/12/2003  S         52,344      5.0358
                      04/12/2003  S          9,901      4.9967
                      04/12/2003  S         40,847      4.9967
                      09/12/2003  S         26,127      4.9170
                      11/12/2003  S         30,961      4.9110
                      23/01/2004  S         29,229      5.2848
                      03/02/2004  S         22,442      5.5624
                      04/02/2004  S          8,865      5.6121
                      06/02/2004  S         35,646      5.5215
                      20/09/2004  B         39,037      4.5910
                      20/09/2004  B        238,268      4.5910
                      20/09/2004  B         83,305      4.5889

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