A perlish version of the script (hopefully), also untested and may overwrite things.

use LWP::Simple;
use Archive::Zip;
my $url = 'http://www.bleb.org/tv/data/listings?format=XMLTV&file=zip&
+channels=bbc1,bbc2,bbc3,bbc4,bbc7,itv1,ch4,five,abc1,bbc_6music,bbc_r
+adio2,bbc_radio4,e4,itv2,itv3,uk_history&days=0';
my $zipfile = 'bleb.zip'

if (is_success ( getstore $url, $zipfile ) {
    my $zip = Archive::Zip->new($zipfile);
    foreach my $z ($zip->members) {
        $zip->extractMember;
    }
}
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