I lost:
Protea cynaroides
Puya alpestris
Abutilon megapotamicum
Eucalyptus mannifera (but probably fungal disease rather than frost damage)
Campsis radicans
A fremontedendon
A rosemary bush
A cistus
A cardoon/artichoke
A yellow leyland-like cypress
Quite a few bulbs/tubers left in the ground didn't reappear, but then that's normal. But in particular no dahlias reappeared.

Very badly damaged:
Metrosideros umbellata (about 80% of the plant is dead, only a small number of new leaves now appearing on the rest of it, worried about its survival)
Cordyline Australis "torbay red" - frozen to the ground, new shoots now appearing at ground level rather tentatively and small
Eucalyptus nova anglica - doesn't look happy, new leaves barely growing
Eucalyptus pulverulenta - only a few new leaves this season

Quite damaged:
Crinodendron hookeriana - completely defoliated, about half the plant dead, but resprouting vigorously
Sophora tetraptera - completely defoliated, lost a few branches, resprouting OK-ish in what's left
Lapageria rosea - lost about 80%-90% of the upper plant, but now resprouting vigorously
Fuchsia magellanica - upper parts of plant killed, but sprouting vigorously from the roots

Unaffected or barely affected to my surprise:
Pseudopanax crassifolia
Tasmannia (Drymys) lanceolata
Myrtus communis subsp tarentina
Grevillea rosmarinifolia
Desfontainea spinosa
Cordyline australis (plain one)
Hedychium coccineum "Tara"
Trachelospermum "Waterwheel"
Akebia quinata
Lomatia ferruginea
Maytenus boaria
Daphne odora