Looking at the new guidance it appears possible that every single lobby group that abuses others for failing to agree with their ideology will be unemployable by schools: Look at the following (edited for brevity)
Schools are responsible for ensuring that speakers, tools, and resources do not undermine the fundamental British values including:
mutual respect and tolerance of those with different faiths and beliefs
Schools should not under any circumstances work with, or use materials produced by, external agencies that take extreme political positions on these matters. This is the case even if the material itself is not extreme, as the use of it could imply endorsement or support of the organisation.
Examples of extreme political positions include, but are not limited to:
opposition to the right of freedom of speech, freedom of association, freedom of assembly or freedom of religion and conscience
engaging in or encouraging active or persistent harassment or intimidation of individuals in support of their cause
promoting divisive narratives that seek to justify serious criminal activity, including violent action against people, criminal damage to property, hate crime or terrorism
the encouragement or endorsement of serious criminal activity, including where organisations fail to condemn criminal actions that have been committed in their name or in support of their cause, including violent action against people, criminal damage to property, hate crime or terrorism
Working with such organisations is not compatible with schools’ requirements to actively promote fundamental British values