Oral statements about the contract do have to be consistent with the written contract (that is, in the context where you ask the landlord what a particular clause means before signing — not in the case where you are modifying an existing contract). (law.stackexchange.com)
As to what types of activities are prohibited, the regulations add little besides specifying that they include «the publication or distribution of written or printed statements or the making of oral statements on behalf of or in opposition to such a candidate. (law.stackexchange.com)
The report is based on more than 90 written submissions and 13 oral statements from members of the U.K. academic community, diversity - promoting organizations, universities, funding bodies, and the government. (sciencemag.org)