<?php
    // the code below will never change.
    function get_my_content($page) {
        $my_id = $page;
        $post_id = get_post($my_id, ARRAY_A);
        $title = $post_id['post_title'];
        $content = $post_id['post_content'];

        return $content;
    }
?>

<div class='showreel-title' id='showreel-title-excerpts'>Showreel Excerpts</div>
<div class='showreel'>
<?php
    $page = get_page_by_path('Showreels/Excerpts');
    echo get_my_content($page);
?>
</div>

<div class='showreel-title' id='showreel-title-the-ruth-rendell-mysteries'>The Ruth Rendell Mysteries</div>
<div class='showreel'>
<?php
    $page = get_page_by_path('Showreels/The Ruth Rendell Mysteries');
    echo get_my_content($page);
?>
</div>

<div class='showreel-title' id='showreel-title-dalziel-and-pascoe'>Dalziel and Pascoe</div>
<div class='showreel'>
<?php
    $page = get_page_by_path('Showreels/Dalziel and Pascoe');
    echo get_my_content($page);
?>
</div>