Rule 8.3 - SKYEPHARMA PLC

FORM 8.3 DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE (Rule 8.3 of the City Code on Takeovers and Mergers) 1. KEY INFORMATION Name of person dealing BARCLAYS PLC (Note 1) Company dealt in SKYEPHARMA PLC Class of relevant security GBP 0.10 to which the dealings being disclosed relate (Note 2) Date of dealing 19 JANUARY 2006 2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE (a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3) Long Short Number (%) Number (%) (1) Relevant 16,796,663 (2.23%) 748,392 (0.10%) securities (2) Derivatives 1,002,814 (0.13%) 204,655 (0.03%) (other than options) (3) Options and 0 (0.00%) 0 (0.00%) agreements to purchase/sell Total 17,799,477 (2.36%) 953,047 (0.13%) (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of relevant security: Long Short Number Number (%) (%) (1) Relevant securities (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total (c) Rights to subscribe (Note 3) Class of relevant security: Details 3. DEALINGS (Note 4) (a) Purchases and sales Purchase Number of Securities Price per unit /sale (GBP) Purchase 20,000 0.4338 Sale 88,453 0.4329 In addition to the above, the following transactions have also taken place since the last disclosure on 09 January 2006. Transaction date Purchase/sale Number of Securities Price per unit (GBP) 10 January 2006 Sale 28,747 0.4874 11 January 2006 Purchase 5,070 0.4876 11 January 2006 Purchase 8,075 0.5000 11 January 2006 Sale 138,014 0.4851 12 January 2006 Purchase 3,000 0.4851 12 January 2006 Sale 4,000 0.4859 12 January 2006 Sale 107,40 0.4859 13 January 2006 Sale 40,000 0.4825 13 January 2006 Sale 30,000 0.4808 13 January 2006 Sale 200,851 0.4823 16 January 2006 Purchase 87,150 0.4819 16 January 2006 Sale 49,656 0.4630 16 January 2006 Sale 42,619 0.4700 17 January 2006 Purchase 14,603 0.4464 17 January 2006 Purchase 297,014 0.4478 17 January 2006 Purchase 30,000 0.4400 17 January 2006 Sale 89,152 0.4378 18 January 2006 Purchase 1,011 0.4276 18 January 2006 Purchase 17,179 0.4233 18 January 2006 Purchase 12,480 0.4375 18 January 2006 Sale 61,207 0.4374 18 January 2006 Sale 20,000 0.4250 (b) Derivatives transactions (other than options) Product Long/Short Number of Securities Price Per name, (Note 6) (Note 7) Unit (GBP) e.g. CFD CFD Long 88,453 0.4329 CFD Short 20,000 0.4338 CFD Short 22,831 0.4230 In addition to the above, the following derivatives transactions have also taken place since the last disclosure on 09 January 2006. Transaction Product Long/ Number of Price Per Unit date name, Short Securities (GBP) e.g.CFD (Note6) (Note 7) 10 January 2006 CFD Long 28,747 0.4874 11 January 2006 CFD Long 138,014 0.4851 11 January 2006 CFD Short 5,070 0.4876 11 January 2006 CFD Short 8,075 0.5000 12 January 2006 CFD Long 107,405 0.4859 12 January 2006 CFD Short 3,000 0.4851 13 January 2006 CFD Long 200,851 0.4823 13 January 2006 CFD Long 30,000 0.4808 13 January 2006 CFD Long 40,000 0.4825 16 January 2006 CFD Long 42,619 0.4700 16 January 2006 CFD Long 49,656 0.4630 16 January 2006 CFD Short 87,150 0.4819 17 January 2006 CFD Long 89,152 0.4378 17 January 2006 CFD Short 297,014 0.4478 17 January 2006 CFD Short 14,603 0.4464 17 January 2006 CFD Short 30,000 0.4400 18 January 2006 CFD Long 61,207 0.4374 18 January 2006 CFD Long 20,000 0.4250 18 January 2006 CFD Short 1,011 0.4276 18 January 2006 CFD Short 17,179 0.4233 18 January 2006 CFD Short 12,480 0.4375 18 January 2006 CFD Short 21,978 0.4450 (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name, Writing, Number of Exercise Type, e.g. Expiry Option money e.g. call selling, securities to price American, date paid/received option purchasing, which the option European etc. per unit (Note varying etc. relates (Note 7) 5) (ii) Exercising Product name, e.g. call Number of securities Exercise price per unit option (Note 5) (d) Other dealings (including new securities) (Note 4) Nature of transaction Details Price per unit (if (Note 8) applicable) (Note 5) 4. OTHER INFORMATIONS Agreements, arrangements or understandings relating to options or derivatives Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated. Is a Supplemental Form 8 attached? (Note 9) NO Date of disclosure 20 JANUARY 2006 Contact name BARCLAYS CORPORATE SECRETARIAT Telephone number 020 7116 2913 If a connected EFM, name of offeree/offeror with which connected If a connected EFM, state nature of connection (Note 10) Notes The Notes on Form 8.3 can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk

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