Net Asset Value(s)

British Portfolio Trust PLC
06 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 5 March 2008:

1)  the capital net asset value per ordinary share was 171.59p.

2)  based on the number of shares held in treasury, the net asset value per
   ordinary share was 171.36p.



Enquiries:
Peter Ingram
Tel: [phone]
6 March 2008



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