(1) A person shall not be guilty of an offence under this Act by reason only of—
(a) the taking or attempted taking of any badger which had been disabled otherwise than by his act and was taken or to be taken solely for the purpose of tending it;
(b) the killing or attempted killing of any badger which appeared to be so seriously injured or in such a condition that to kill it would be an act of mercy;
(c) the unavoidable killing or injuring of any badger as an incidental result of a lawful action.
(1A) A person shall not be guilty of an offence under section 1(1) or 2(3) of this Act by reason of—
(a) the killing or taking or the attempted killing or taking of any badger, or
(b) the injuring of any badger in the course of taking it or attempting to kill or take it,
or
(c) the interfering with any badger sett,
if he shows that his action was necessary for the purpose of preventing serious damage to land, crops, poultry or any other form of property.
(1B) The defence provided by subsection (1A) above shall not apply in relation to any action taken at any time if it had become apparent, before that time, that that action would prove necessary for the purpose mentioned in that subsection and either—
(a) a licence under section 9 of this Act authorising that action had not been applied for as soon as reasonably practicable after that fact had become apparent; or
(b) an application for such a licence had been determined.
(2) It shall not be an offence under section 3 of this Act for any person to have a live badger in his possession or under his control if—
(a) it has been kept in captivity by that person for a continuous period beginning before the passing of this Act,
(b) it is in that person’s possession or under his control, as the case may be, in the course of his business as a carrier,
(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(d) it has been taken in circumstances in which, by virtue of subsection (1)(a), above, the taking of the badger did not constitute an offence under this Act and it is necessary for the purpose of tending it for it to remain in that person’s possession, or under his control, as the case may be.
(3) A person shall not be guilty of an offence under this Act by reason only of something done in connection with an experiment on a living badger if what is done does not constitute a contravention of the Cruelty to Animals Act 1876.
(4) A person shall not be guilty of an offence under section 2 (3) (a), (c) or (e) of this Act if he shows that his action was the incidental result of a lawful operation and could not reasonably have been avoided.
(5) A person shall not be guilty of an offence under section 2(3)(a), (c) or (e) of this Act by reason of obstructing any entrance of a badger sett for the purpose of hunting foxes with hounds provided that he takes no action other than obstructing such entrances, does not dig into the tops or sides of the entrances, that the materials so used are not packed hard into the entrances, that the materials so used are only—
(a) untainted straw or hay, or leaf-litter, or bracken, or loose soil placed in the entrances on the day of the hunt, or after midday of the day preceding the day of the hunt, or
(b) a bundle of sticks or faggots, or paper sacks either empty or filled with untainted straw, or hay, or leaf-litter, or bracken, or loose soil, placed in the entrances on the day of the hunt and removed the same day,
and that the person is so doing with the authority of the landowner or occupier and is authorised by a Hunt recognised by the Masters of Fox Hounds Association, the Association of Masters of Harriers and Beagles or the Central Committee of Fell Packs, which Hunt shall keep a register of all such persons.
(6) A person shall not be guilty of an offence under section 2(3)(a) or (c) or (e) of this Act by reason of his hounds marking at a badger sett, provided they are withdrawn as soon as reasonably practicable.