Net Asset Value(s)

RNS Number : 1012E

British Portfolio Trust PLC

23 September 2008

British Portfolio Trust PLC

As recommended by the AIC, with effect from 1 June 2008, net asset values are calculated on both a capital and a cum-income basis.

British Portfolio Trust PLC announces that at close of business on 22 September 2008:

the capital net asset value per ordinary share was 148.77p.
including shares held in treasury, the capital net asset value per ordinary share was 148.56p.
the cum-income net asset value per ordinary share was 152.25p.including shares held in treasury, the cum-income net asset value per ordinary share was 151.73p.