The landlord under an occupation contract may not, by any act or omission, interfere with the contract-holder's right to occupy the dwelling.
The landlord does not interfere with the contract-holder's right to occupy the dwelling by reasonably exercising the landlord's rights under the contract.
The landlord does not interfere with the contract-holder's right to occupy the dwelling because of a failure to comply with repairing obligations (within the meaning of section 100(2)).
The landlord is to be treated as having interfered with the contract-holder's right if a person who—
interferes with the contract-holder's right by any lawful act or omission.
This section is a fundamental provision which is incorporated as a term of all occupation contracts.