3.—(1) These Regulations apply where, after they come into force, an appellant informs the National Assembly in the notice of appeal of a wish for the appeal to be disposed of on the basis of written representations.
(2) Where an appeal under section 174 of the Planning Act (appeal against enforcement notice) or section 39 of the Listed Building Act (appeal against listed building, or conservation area, enforcement notice) is not being disposed of on the basis of written representations and the appellant and the local planning authority inform the National Assembly that they wish it to be disposed of on that basis, these Regulations apply to the proceedings to such extent as the National Assembly may specify having regard to any steps already taken in relation to those proceedings.
(3) These Regulations cease to apply to proceedings if the National Assembly informs the appellant and the local planning authority that it will give them an opportunity of appearing before and being heard by a person appointed by it for the purpose.