The word from within Nissan is that they have (like Clarkson) tested an import 350Z of unknown specification which therefore bears little relationship to the product that the UK market will receive in October (or sooner please....).
They are, nevertheless, hoping that the programme will address the imbalance generated by Clarkson's biased and ill-informed comments on Top Gear. Expect criticisms of the interior though..... Personally, I hope they recognise that the engine is not French and that its table-top torque curve does not make it unexciting.
For a more glowing report on a proper Euro 350Z (albeit still pre-production in some aspects, see Japanese Performance magazine September issue: quote "The best sub-£25K coupe in the world? We think so".