Objection on the grounds that GNLP 0341 is an environmental asset that is a valuable part of the town's Green Infrastructure and local Ecosystem Services. It has historic parkland associations, is an area of significant wildlife value.

It consists in an area of meadowland over 200 years old with a mosaic of parkland trees, and it is an historic example of a 'detached park' associated with The Cedars, a notable house in Mount Street, and is listed as NHER 33463.

It is an example of the Priority Habitat unimproved 'Lowland Meadow' listed in the UK Biodiversity Action Plan. It is estimated that by 1984 in lowland England and Wales, semi-natural grassland declined by 97% over the previous 50 years. Parish Fields is a good example of such unimproved meadow sustained by continuity of land management for over 200 years. A local resident has recorded that woodpeckers, thrushes, warblers and tawny owls use the site. It may also be classified as an example of the BAP Priority Habitat 'Wood-pasture and Parkland', with its mosaic of veteran trees and meadow land. Surrounded by housing areas, it is an important part of the wildlife network in Diss as it acts as biodiversity reservoir linked with local gardens.

Parish Fields is identified as an Important Local Open Space in the South Norfolk Local Plan. It is thus to be 'protected and positively improved where opportunities arise'. See Development Management Policies Document Policy DM 4.4, and paragraphs 4.28 and 4.42. 'Positive improvement' in this instance would be to ensure the maintenance of regular grazing.