This extract comes from the "service charge" clause of an English lease:
... PROVIDED ALWAYS AND IT IS HEREBY AGREED AND DECLARED that the Lessor shall be entitled at its absolute discretion to vary the proportion of the Service Costs payable by the Lessee as defined in clause 1(n) in the event of rights being granted pursuant to the terms of paragraph 5 of the Fifth Schedule hereto Provided that such variation shall not result in the said Service Charge proportion being increased
Students not familiar with service charges will need an explanation:
Usually when parts a building, or of a commercial or residental estate, are let to different tenants, either the landlord or a management company is responsible for the maintenance and management of the shared facilities, including the structure of any shared building.
The landlord (or management company) recoups the cost of this service from the tenants, each of whom pays the proportion prescribed by their leases. This service charge is paid in addition to the rent.
Students spent about 10 minutes considering how much of this extract is necessary and rewriting it as succinctly as possible. They usually worked in groups of 2 or 3.
I would walk around listening to their discussions, reading what they had written so far, and making suggestions. Once most of them had finished I'd ask a spokesperson from one or two groups to read their redrafted version for discussion.
A separate handout, for students to consider later (or when they had finished the exercise) included this list of drafting faults in the original:
The most succinct revision is to omit the clause altogether, as all it says is:
The landlord may (but does not have to) reduce the tenant's contribution to the service charge if certain conditions are satisfied.
Is this clause likely to be used? Has anyone ever heard of a landlord who told tenants "I'm going to reduce your payments"? And if this did happen would the tenant object on the ground that "It's not in my lease!"? In any case, anyone can waive any payment due to them if they want to, without permission and regardless of whether conditions are satisfied.