discloses to another anything which is likely to prejudice the investigation, or

interferes with material which is likely to be relevant to the investigation.

discloses to another anything which is likely to prejudice an investigation resulting from the disclosure under that section, or

interferes with material which is likely to be relevant to an investigation resulting from the disclosure under that section.

that he did not know and had no reasonable cause to suspect that the disclosure or interference was likely to affect a terrorist investigation, or

that he had a reasonable excuse for the disclosure or interference.

to his client or to his client’s representative in connection with the provision of legal advice by the adviser to the client and not with a view to furthering a criminal purpose, or

to any person for the purpose of actual or contemplated legal proceedings and not with a view to furthering a criminal purpose.

the disclosure is of a matter within section 21D(2) or (3)(a) (terrorist property: tipping off), and

the information on which the disclosure is based came to the person in the course of a business in the regulated sector.

on conviction on indictment, to imprisonment for a term not exceeding five years, to a fine or to both, or

on summary conviction, to imprisonment for a term not exceeding six months, to a fine not exceeding the statutory maximum or to both.

a reference to conducting a terrorist investigation includes a reference to taking part in the conduct of, or assisting, a terrorist investigation, and

a person interferes with material if he falsifies it, conceals it, destroys it or disposes of it, or if he causes or permits another to do any of those things.