<!-- BEGIN [% component.name %] -->
[%-
    re = '\*\*';
    IF ( item = nhs_number.match('(\d{3})(\d{3})(\d{4})') );
        item.join; # defaults to single space
    ELSIF nhs_number.match(re); nhs_number; # anonymised
    ELSE;
        'PLEASE USE THE NHS NUMBER';
    END;
-%]
<!-- END [% component.name %] -->