Donoghue v Stevenson
(the snail and the ginger beer)
defined how duty of care is established for the tort of negligence with regards to harmful products which have been consumed internally
Grant v Austalian Knitting Mills Ltd
Extended upon Donoghue v Stevenson that the tort of negligence applies to products applied externally to the body
Hedley Byrne & Co Ltd v Heller
Whether liabilit could arrise for economic loss flowing from negeligent advise