4. The conveyance or grant shall include such provisions (if any) as the landlord may require to secure that a qualifying person is bound by, or to indemnify the landlord against breaches of, restrictive convenants (that is to say, convenants or agreements restrictive of the use of any land or premises) which affect the qualifying dwelling-house otherwise than by virtue of the qualifying person’s tenancy or an agreement collateral to it and are enforceable for the benefit of other property.
5. Subject to paragraph 6, and to Parts II and III of this Schedule, the conveyance or grant may include such convenants and conditions as are reasonable in the circumstances.