Parks, gardens and battlefield sites which appear to English Heritage to be of special historic interest may be entered onto Registers under powers conferred under the Historic Buildings and Ancient Monuments Act, 1953 (as amended).
Registration in this way makes the effect of proposed development on the sites and their settings a material consideration (PPG, paragraphs 2.24-5).
No separate consent in addition to planning permission is required in the case of registered parks and gardens. Nor is there any requirement to consult English Heritage over planning applications which affect registered battlefields.
Local planning authorities are, however, required to consult English Heritage where a planning application affects a Grade I or II* registered park or garden, and the Garden History Society on all applications affecting registered sites, regardless of the grade of the site (see 'Central Government Circular 9/95' and summary in 'Environment Circular 14/97/Culture, Media and Sport Circular 1/97').
This is to ensure that local planning authorities have appropriate professional advice when considering such applications. Government policy is that local planning authorities should protect registered parks and gardens and battlefields when preparing development plans and when determining planning applications.