Found some dvd's for 49p @ Smyths Toystore Charlton (don't know if it will be the same for all stores)
They have a shelf of them, some are sealed and some are not but the discs are new.
Some dvds I remember seeing were -
Barney - Riff's Musical Zoo
Bob the Builder - Race to Finish
Dora The Explorer (there were 2 different dvd's)
Night at the Museum