Where in order to proceed with the construction or improvement in relation to which an environmental statement has been made it is necessary for the project authority to make—
an order or scheme to which Schedule 1 to this Act applies, or
a compulsory purchase order in the exercise of highway land acquisition powers,
the project authority must, so far as is practicable to do so, take the steps required of it by this Part of this Act concurrently with the corresponding steps required of it by Schedule 1 to this Act or the Acquisition of Land Act 1981 (as the case may be) in connection with the making of the related instruments.
Where, in respect of a project, there is a requirement to carry out—
an environmental impact assessment, and
an assessment under regulation 61 of the Conservation of Habitats and Species Regulations 2010,
the project authority must, so far as is practicable to do so, ensure that the assessments are co-ordinated.