Repairs deal with cracking, surface flaking, uneven panels and drainage faults before they become expensive. Sudden storm rainfall and the reactive black soil underlying most of the Downs accelerate deterioration once concrete is already damaged, which is why getting in early matters here — water finding its way beneath a slab is what swells the clay and moves the panel, not the crack itself.
Expect the underlying cause to be identified first, whether that is ground movement, root intrusion from a fig or camphor laurel, a leaking stormwater line or inadequate preparation when the driveway was originally poured. From there the method follows the damage: crack injection, cut-out and patching, edge rebuilding, resealing or lifting sunken sections back to level.
Done properly, repairs restore both function and appearance, remove trip hazards and stop water pooling where it has been quietly undermining the slab. In a great many cases targeted repairs add years to a driveway that looked ready for replacement. A site inspection is the most reliable way to confirm the right approach.