Section 70ZG (variation and revocation of access agreements), subsection (1) provides that the parties may vary or revoke the agreement.
	Under subsection (2) this must be done in writing.
	Subsection (3) provides that where the access agreement is varied it has effect as an access agreement under the Chapter, and similarly subsection (4) provides that where it is revoked it ceases to be an access agreement for the purposes of the Chapter.
	Subsection (5)(a) provides that both parties need to notify the CAC of the variation or revocation in writing, and the Secretary of State has the power to make provision in regulations as to the form and manner of that notification.
	Subsection (5)(b) provides that the variation or revocation only has effect after the CAC has been notified.
Part 4: Trade Unions and Industrial Action, etc Right of trade unions to access workplaces New Section 70ZG