manage to sort it, for anyone else looking its within content.php
within a child theme changed is_search() section to the following
<?php if ( is_home() || is_search() ) : ?>
<div class="entry-summary">
<?php the_excerpt( __( 'Continue reading', 'flat' ) ); ?>
<p><a class="btn btn-sm btn-success" href="<?php the_permalink(); ?>">Read The Full Review</a>
</div>
<?php else : ?>
<div class="entry-content">
<?php the_content( __( 'Continue reading', 'flat' ) ); ?>
<?php wp_link_pages( array( 'before' => '<div class="page-links"><span class="page-links-title">' . __( 'Pages:', 'flat' ) . '</span>', 'after' => '</div>', 'link_before' => '<span>', 'link_after' => '</span>' ) ); ?>
</div>
<?php endif; ?>
