Net Asset Value(s)

British Portfolio Trust PLC
11 October 2005



British Portfolio Trust PLC

British Portfolio Trust PLC announces that at close of business on 10 October
2005:

1)   Excluding any profit or loss on the mark to market value of the
     company's fixed interest swap contract, the capital net asset value per 
     ordinary share was 159.55p

2)   based on the market value of the company's fixed interest rate swap
     contracts, the capital net asset value per ordinary share was 159.14p; and

3)   based on the number of shares held in treasury, the net asset value per
     ordinary share was 159.48p.



The market value of the company's fixed interest rate swap contracts is updated
monthly.



Enquiries:
Peter Ingram
Tel: [phone]
11 October 2005





                      This information is provided by RNS
            The company news service from the London Stock Exchange