Noticed when comparing to westminster_new\templates\tpl_product_reviews_write_default.php to the default Zen Cart v1.5.4 code that the honey pot field is missing (this was introduced in v1.5.1):

Around line 70 find this:
Code:
<?php echo zen_draw_textarea_field('review_text', 60, 5, '', 'id="review-text"'); ?>
Paste this on the next line:
Code:
<?php echo zen_draw_input_field('should_be_empty', '', ' size="60" id="RAS" style="visibility:hidden; display:none;" autocomplete="off"'); ?>
Didn't see that this had been reported..