time limit of planning application

Question

Is  there a time limit that a planning application can remain open if it is not determined and not appealed by the applicant?

ie if an application is submitted and is not determined at the 8 week period and is then still not determined even after 6 months and the applicant does not appeal on non determination or infact do anything else.? can a third party apply to have it automatically declined to resolve the outstanding problem to neighbours.

Answer 1

The deadline for submitting an appeal is six months from the date of the application decision letter or in the case of non-determination, six months from the date the decision should have been made.