Holding in Company

Diagonal PLC 20 February 2001 DEALINGS BY SUBSTANTIAL SHAREHOLDERS 1) NAME OF COMPANY DIAGONAL PLC 2) NAME OF SHAREHOLDER HAVING A MAJOR INTEREST MORLEY FUND MANAGEMENT LIMITED 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 MORLEY FUND MANAGEMENT LIMITED 4) Name of the registered holder(s) and, if more than one holder, the number of shares held by each of them. BNY NORWICH UNION NOMINEES LTD 1,077,233 CHASE GA GROUP NOMINEES LTD 1,741,600 CHASE GA PENSION NOMINEES LTD 149,000 CUIM NOMINEE LIMITED 470,000 5) Number of shares/amount of stock acquired. NA 6) ( N/A %) of issued Class 7) Number of shares/amount of stock disposed NA 8) ( N/A %) of issued Class 9) Class of security ORDINARY SHARES OF 10p EACH 10) Date of transaction 11) Date company informed 16 FEBRUARY 2001 12) Total holding following this notification 3,437,833 13) Total percentage holding of issued class following this notification 3.97% 14) Any additional information NOVATION OF FUNDS FROM NORWICH UNION INVESTMENT MANAGEMENT LIMITED TO MORLEY FUND MANAGEMENT LIMITED, BOTH WHOLLY OWNED SUBSIDIARIES OF CGNU PLC 15) Name of contact and telephone number for queries GILLIAN MAY-FISHER TEL: 020 7597 5153 16) Name and signature of authorised company official responsible for making this notification Date of Notification 19 FEBRUARY 2001

Companies

Dialight (DIA)
UK 100