First fix to second fix, doors to floors, Staircases to even one off bespoke unique pieces of furniture when we get the time.

Default Gallery Type Template

This is the default gallery type template, located in:
/home/sites/cranfordsofdurham.co.uk/public_html/wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/nextgen_gallery_display/templates/index.php.

If you're seeing this, it's because the gallery type you selected has not provided a template of it's own.