Net Asset Value(s)

British Portfolio Trust PLC
25 March 2008



British Portfolio Trust PLC



As recommended by the AIC, financial assets are now valued on a bid price basis
in accordance with revised UK accounting standards.



British Portfolio Trust PLC announces that at close of business on 20 March
2008:

1)      the capital net asset value per ordinary share was 159.37p.

2)      based on the number of shares held in treasury, the net asset value per
        ordinary share was 159.04p.





Enquiries:

Peter Ingram

Tel: [phone]

25 March 2008






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