A specific statutory jurisdiction exists under s. 5 of the Illegal Immigrants (Trafficking) Act 2000 to deal with the question of whether or not substantial grounds have been advanced by an applicant who wishes to challenge a negative decision. A court which has been asked to dismiss proceedings pursuant to its inherent jurisdiction must take that into account. Such jurisdiction must be sparingly exercised and a court will likely refrain from exercising in the absence of bad faith, deliberate prolongation of proceedings to delay the implementation of patently valid orders, or where the invocation of judicial review jurisdiction was inappropriate.