If a park or garden has been registered using the designation process under the National Heritage Act 1983 it has legal protection. Registration is a material consideration in the planning process so, following a planning application for development which would affect a registered park or garden, local planning authorities must take into account the historic interest of the site when deciding whether or not to grant permission for any changes. Although the inclusion brings no additional statutory controls in itself, English local authorities are required by government to take the protection of the historic environment into account in their policies and resource allocations. If material changes are made to a registered park or garden without having been granted planning permission first, local planning authorities may require that the changes are undone and, in extreme cases, a prosecution may result.