Trouble With Custom Taxonomy Archive

I’ve set up a custom taxonomy archive page for the taxonomy ‘work-type’. I’m using the following code to output a list of terms in my sidebar:
https://www.mattpealing-server.co.uk/~devmattp/my-work/

<?php
	$terms = get_terms('work-type');
	$count = count($terms);
	if ( $count > 0 ){
	    echo '<ul>';
	    foreach ( $terms as $term ) {
	      echo '<li><a href="' . get_term_link($term->slug, 'work-type') . '">' . $term->name . '</a></li>';

	    }
	    echo '</ul>';
	}
?>

However, when I click one of the links (e.g. https://www.mattpealing-server.co.uk/~devmattp/work-type/web/) it simply forwards me to a page that just lists all of my default posts.

Here is the code for taxonomy-work-type.php:

[71 lines of code moderated as per the Forum Rules. The maximum number of lines of code that you can post in these forums is ten lines. Please use the pastebin]

Can anyone see what I’m doing wrong?