Holding(s) in Company

Henderson High Income Trust PLC
20 February 2004

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Name of company
 HENDERSON HIGH INCOME TRUST PLC



2. Name of shareholder having a major interest
 LAING & CRUICKSHANK INVESTMENT 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
 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
 PRODUCTIVE NOMINEES LIMITED A/C ALL STOCKS - 11,966,294

JOCAR NOMINEES LIMITED A/C ALL STOCKS - 161,900

TOTAL - 12,128,194



5. Number of shares / amount of stock acquired
 NOT NOTIFIED



6. Percentage of issued class
 -



7. Number of shares / amount of stock disposed
 NOT NOTIFIED



8. Percentage of issued class
 -



9. Class of security
 ORDINARY 5P SHARES



10. Date of transaction
 NOT NOTIFIED



 11. Date company informed
20 FEBRUARY 2004



12. Total holding following this notification
  12,128,194



13. Total percentage holding of issued class following this notification
 21.6%



14. Any additional information
 -



15. Name of contact and telephone number for queries
 JOHN ELLMAN-BROWN, 020 7818 6816



16. Name and signature of authorised company official responsible for making
this notification
 JOHN ELLMAN-BROWN, FOR AND ON BEHALF OF HENDERSON SECRETARIAL SERVICES LIMITED



Date of notification
 20 FEBRUARY 2004



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