Anyone who is invited or permitted to be on the land. The permission may be express or implied (e.g. postal worker, those who pay for a right of entry, sales people and casual visitors)
A duty to take such care as in all the circumstances of the case is reasonable to see that the visitor will be reasonably safe in using the premises for the purposes for which he is invited or permitted to be there. The common duty of care only applies if the injury is due to the state of the premises and not the activities of the visitor.
An occupier may expect that a specialist visitor (trade etc..) will be aware of & protect himself against risks within his own specialism "within the exercise of his calling"
The aim is to put the claimant in the position they would have been if the tort had not been committed. The claimant can claim for both general and special damages.