Dairy Milk Thank You Chocolate Bar

There are thank-yous, and there are 850-gram thank-yous. Cadbury's giant Dairy Milk in its special 'Thank You!' gift sleeve is the latter: nearly a kilo of the classic creamy chocolate, delivered direct to the door of whoever earned it. Teachers at term's end, neighbours who fed the cat for a fortnight, colleagues who covered your leave - all suitable recipients of gratitude at this scale.