Will there be a requirement on the applicant to notify interested parties of a DCO submission?
There are no provisions in the Planning Act 2008 (PA2008) which require an applicant (or anybody else) to notify about the submission of an application. The first statutory post-submission notification that is carried out is under s56 of the Planning Act 2008. Section 56 sets out the notification requirements placed on applicants in the event that an application for development consent is accepted for examination.
Notwithstanding the above, upon receipt of an application the relevant project page on the National Infrastructure Planning website will acknowledge the submission and explain that the 28 day Acceptance stage is engaged, giving the deadline by which an acceptance decision must be made.