Akismet
Protects your site from comment spam
BackWPup
Backs up the MKHA network of sites
Column Shortcodes
Easily create columns in your posts or pages
https://wordpress.org/plugins/column-shortcodes/
Contact Form DB
Save form submissions which can be displayed or exported
https://en-gb.wordpress.org/plugins/contact-form-7-to-database-extension/
Content Reveal
Easily hide and reveal WordPress content
https://wordpress.org/plugins/simple-content-reveal/
Cookie Consent
Provides compliance with the UK implementation of the EU regulations regarding the use of website cookies
https://catapultthemes.com/cookie-consent/
Datapress
Show maps, timelines, and rich data visualizations
http://projects.csail.mit.edu/datapress/
Easy Table
Create tables in post, page, or widget in an easy way
https://wordpress.org/plugins/easy-table/
Events Manager
http://wp-events-plugin.com/
Forget About Shortcode Buttons
A visual way to add CSS buttons in the editor screen
http://www.designsandcode.com/551/wordpress-forget-about-shortcode-buttons/
Google Analytics by Yoasty
Tracks usage using Google Analytics web statistics
iframe
https://wordpress.org/plugins/iframe/
ImageMapper
Create image maps with a visual editor
https://wordpress.org/plugins/imagemapper/
Jetpack
https://jetpack.com/
MailChimp for WordPress
Add email newsletter sign-ups for MailChimp
https://en-gb.wordpress.org/plugins/mailchimp-for-wp/
MapPress Easy Google Maps Pro
http://wphostreviews.com/product/mappress
Media File Renamer
Enables automatic or manual renaming of filenames in the media library according to their titles. When a file is renamed, the references to it are also updated.
https://meowapps.com/media-file-renamer/
Media Library Assistant
Enhances the Media Library
https://en-gb.wordpress.org/plugins/media-library-assistant/
Meta Slider
Slideshows
https://wordpress.org/plugins/ml-slider/
TablePress
Create and manage tables in your posts and pages
https://en-gb.wordpress.org/plugins/tablepress/
WordPress Importer
WP Calameo
Embed Calameo publications
https://wordpress.org/plugins/wp-calameo/
WP Front Scroll Top
Allows the visitor to easily scroll back to the top of the page
https://wpfront.com/wordpress-plugins/scroll-top-plugin/
WP YouTube Lyte
YouTube audio and video embedding
https://wordpress.org/plugins/wp-youtube-lyte/
Yoast SEO
Search engine optimization
https://en-gb.wordpress.org/plugins/wordpress-seo/
Zen Menu Logic
Enables custom menus is to be used as the primary menu.on any page
https://en-gb.wordpress.org/plugins/zen-menu-logic/