Pull custom field values into featured post list

I can’t figure this one out so hoping someone can give me a little help!

I have set up some custom fields on a post page (eg – Client = BBC) and they render out fine in the post page (single.php) but I also want that field to render out within a “featured posts” slider on a homepage template that I’m using.

It’s just not showing anything when I use the query I have set up on single.php which is

<ul class="related-information">
                <?php
					global $wp_query;
					$postid = $wp_query->post->ID;
					wp_reset_query();
				?>
	                <li><span>Client</span> <?php echo get_post_meta($postid, 'Client', true); ?></li>
	                <li><span>Director</span> <?php echo get_post_meta($postid, 'Director', true); ?></li>
	                <li><span>Format</span> <?php echo get_post_meta($postid, 'Format', true); ?></li>
	                <li><span>Narrator</span> <?php echo get_post_meta($postid, 'Narrator', true); ?></li>
	                <li><span>Producer</span> <?php echo get_post_meta($postid, 'Producer', true); ?></li>
				</ul>

That displays my fields fine on single.php but on home.php (my custom template for the homepage) it shows nothing. I assume I’ve got the query wrong for the homepage but I don’t know how to fix.

Any pointers welcomed 🙂

(I’m not using meta for the fields because that renders out lots of other stuff plugins insert into custom fields)