Small quantities will make it through, larger quantities will attract the attention of customs who will require a disease free certificate . . . which has to be issued via NZ authorities . . . and your friend will not get one . . . . . I've tried it. . . And NZ Hops are not willing to deal direct with brewers in the UK any more as they have Farams as their wholesaler
But I'd be happy for a couple of kilos of Nelson Sauvin, and Hallertau Aroma if you are lucky enough