# File lib/formvalidator.rb, line 848
    def match_postcode(code)
      regexp = Regexp.new('^([ABCEGHJKLMNPRSTVXYabceghjklmnprstvxy]
                           [_\W]*\d[_\W]*[A-Za-z][_\W]*[- ]?[_\W]*\d[_\W]*
                           [A-Za-z][_\W]*\d[_\W]*)$', Regexp::EXTENDED)
      match = regexp.match(code)
      match ? match[0] : nil
    end