303.Section 190 inserts a new section 96A into TCPA 1990. Its purpose is to introduce express power for a local planning authority to make a change to a planning permission if it is satisfied that that change is not material. In determining whether a change is material, a local planning authority must have regard to the effect of the change and any previous changes made under section 96A to the original planning permission: see new section 96A(2).