The Landlord has to go to the Tribunal to get an enforcable 14-day eviction notice, according to this extract from a Tenants Union factsheet:
Application to the Tribunal without notice
The landlord/agent can apply to the Tribunal for a termination order without giving you a termination notice on one or more of the following grounds:
- You, your guests, another occupant or their guests have caused or permitted:
- serious damage to the premises or any neighbouring property
- injury to the landlord, agent, the landlord’s/agent’s employees, or your neighbours
- use of the premises for illegal purposes.
- You or another occupant has seriously or persistently threatened or abused the landlord, agent or the landlord’s/agent’s employees.
The Tribunal may make a termination order and may order you to give immediate possession of the premises to the landlord.
So unless the landlord has been to the tribunal, the eviction order is invalid. A “no grounds” eviction requires a 30-day notice. Anything less than that has to be supported at the Tribunal, if you object to it.