This is green Belt Land and is contrary to government policy it is important to prevent encroachment of Knebworth into the countryside to the west it is also located next to the A1 (M) and traffic from this site would have considerable impact on the B197. Deards End lane is a narrow single track road with no pavement it would put pressure on the railway bridge which is an ancient Monument.
It is also adjacent to ancient woodland with protected habitats.