With the advent of Agenda 21, the blueprint for the transition to sustainab
le development for every nation on the globe, the issue of what exactly is
sustainable agriculture is now being addressed, certainly throughout Europe
. The food chain as a whole is the ultimate framework for a scrutiny of sus
tainability. However, this review looks only at the changing policy setting
for seeking to define and implement sustainable agricultural practice in t
he UK. It analyses the key documents, reviews the state of science and asse
sses policy developments in wildlife/habitat management and the enhancement
of scenery, from individual farms to whole landscapes. It concludes that t
here is neither the scientific understanding nor the economic tools to defi
ne and justify self-reliant agriculture on a farm-by-farm basis. Rather, it
is more advantageous to devise integrated agricultural management arrangem
ents for whole landscapes, crossing the borders of individual holdings. To
do this, it is necessary to involve key stakeholders in the determination o
f the final landscape design. Then there is the tricky issue of how this ma
y be implemented. That will be a sign that a policy for sustainable agricul
ture has come of age.