British Nutrition Foundation has made a special issue of the Nutrition Bulletin on dietary fibre and health. It’s available for free.  You can therefore access the following 6 articles without using your creditcard:

Dietary fibre: an evolving definition?
Victoria Betteridge

Review: Dietary fibre and health: an overview
Judy Buttriss, Caroline Stokes

Carbohydrates and dietary fibre
Joanne Lunn, JL Buttriss

Review: Dietary fibre and the gut microbiota
Karen Scott, Sylvia Duncan, Harry Flint

Dietary fibre and satiety
Joanne Slavin, Hilary Green

Health properties of resistant starch
Anne Nugent