Quick answer
Section 21 and Section 8 are no longer equal live options in England. Section 21 is relevant only to the historical transition and qualifying older notices. Live England cases now sit inside the current Renters' Rights Act possession framework, with notice, evidence, and court preparation carrying more weight from the start.
Broad notice users should start with the eviction notice pack first. That page shows the example bundle, service instructions, validity checks, and the current route hierarchy before you move into a transactional flow.
