(1)  A person is not guilty of an offence under these regulations if he or she –

(a) has been granted an authority that authorises the act or omission that constitutes the alleged offence; and

(b) was acting in accordance with the authority at the time when the alleged offence took place.

(2)  Except as otherwise provided in these regulations, authority for an act or omission is taken to be granted if –

(a) a written authority, specifying the act or omission authorised, is granted by the managing authority under regulation 28 ; or

(b) the act or omission is permitted by the management plan; or

(c) the act or omission is permitted in a designated area and is being undertaken in that area; or

(d) on reserved land in the class of conservation area, regional reserve, nature recreation area, game reserve, private sanctuary or private nature reserve, the managing authority specifies that the act or omission is generally authorised by –

(i) displaying a sign on the reserved land in respect of which the authority is granted; or

(ii) a published notice; or

(e) a person is acting in accordance with a power or as authorised under the Act, subject to sections 27(6) and 35(1) of the Act.