 Any justice of the peace upon an information on oath that there is probable cause to suspect any offence against the Salmon and Freshwater Fisheries Act to have been committed on any premises, or any salmon, trout, freshwater fish or eels to have been illegally taken, or any illegal nets or other instruments to be on any premises, by warrant under his hand and seal may authorise any water bailiff or other officer of the Agency, or any person appointed by the Secretary of State, or any constable, to