“The stipulated statutory effect of the [importers'] withdrawal of their notice of claim under para 3 of Sch 3 was that the goods were deemed by the express language of para 5 to have been condemned and to have been 'duly' condemned as forfeited as illegally imported goods. The tribunal must give effect to the clear deeming provisions in the 1979 Act: it is impossible to read them in any other way than as requiring the goods to be taken as 'duly condemned' if the owner does not challenge the legality of the seizure in the allocated court by invoking and pursuing the appropriate procedure. The deeming process limited the scope of the issues that the [importers] were entitled to ventilate in the FTT on their restoration appeal. The FTT had to take it that the goods had been 'duly' condemned as illegal imports. It was not open to it to conclude that the goods were legal imports illegally seized by HMRC by finding as a fact that they were being imported for own use. The role of the tribunal, as defined in the 1979 Act, does not extend to deciding as a fact that the goods were, as the [importers] argued in the tribunal, being imported legally for personal use. That issue could only be decided by the court. The FTT's jurisdiction is limited to hearing an appeal against a discretionary decision by HMRC not to restore the seized goods to the respondents. In brief, the deemed effect of the [importers'] failure to contest condemnation of the goods by the court was that the goods were being illegally imported by the [importers] for commercial use”