diff --git a/.idea/oliverdavies-uk.iml b/.idea/oliverdavies-uk.iml
index 8a6bfe3..82132bb 100644
--- a/.idea/oliverdavies-uk.iml
+++ b/.idea/oliverdavies-uk.iml
@@ -16,6 +16,7 @@
       <excludeFolder url="file://$MODULE_DIR$/vendor/consolidation/site-alias" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/consolidation/site-process" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/container-interop/container-interop" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/dealerdirect/phpcodesniffer-composer-installer" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/dflydev/dot-access-data" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/dnoegel/php-xdg-base-dir" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/doctrine/annotations" />
@@ -24,6 +25,7 @@
       <excludeFolder url="file://$MODULE_DIR$/vendor/doctrine/common" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/doctrine/inflector" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/doctrine/lexer" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/drupal/coder" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/drupal/core-composer-scaffold" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/drush/drush" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/easyrdf/easyrdf" />
@@ -48,6 +50,7 @@
       <excludeFolder url="file://$MODULE_DIR$/vendor/psr/log" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/psy/psysh" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/ralouphie/getallheaders" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/squizlabs/php_codesniffer" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/stack/builder" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony-cmf/routing" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/class-loader" />
diff --git a/.idea/php.xml b/.idea/php.xml
index 28c4894..8d668da 100644
--- a/.idea/php.xml
+++ b/.idea/php.xml
@@ -83,6 +83,9 @@
       <path value="$PROJECT_DIR$/vendor/drupal/core-composer-scaffold" />
       <path value="$PROJECT_DIR$/vendor/michelf/php-markdown" />
       <path value="$PROJECT_DIR$/vendor/twig/twig" />
+      <path value="$PROJECT_DIR$/vendor/dealerdirect/phpcodesniffer-composer-installer" />
+      <path value="$PROJECT_DIR$/vendor/drupal/coder" />
+      <path value="$PROJECT_DIR$/vendor/squizlabs/php_codesniffer" />
     </include_path>
   </component>
   <component name="PhpProjectSharedConfiguration" php_language_level="7.4" />
diff --git a/composer.json b/composer.json
index 515cb16..9ca6d34 100644
--- a/composer.json
+++ b/composer.json
@@ -30,6 +30,8 @@
         "tightenco/collect": "^6.15"
     },
     "require-dev": {
+        "dealerdirect/phpcodesniffer-composer-installer": "^0.6.2",
+        "drupal/coder": "^8.3"
     },
     "conflict": {
         "drupal/drupal": "*"
diff --git a/composer.lock b/composer.lock
index 44792eb..b15cb33 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "dde2e85b8d9bae5545c6f59b95d23fde",
+    "content-hash": "f2ce3e97747f0c6a54eb150036f7c674",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -6219,7 +6219,163 @@
             "time": "2018-08-28T21:34:05+00:00"
         }
     ],
-    "packages-dev": [],
+    "packages-dev": [
+        {
+            "name": "dealerdirect/phpcodesniffer-composer-installer",
+            "version": "v0.6.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Dealerdirect/phpcodesniffer-composer-installer.git",
+                "reference": "8001af8eb107fbfcedc31a8b51e20b07d85b457a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Dealerdirect/phpcodesniffer-composer-installer/zipball/8001af8eb107fbfcedc31a8b51e20b07d85b457a",
+                "reference": "8001af8eb107fbfcedc31a8b51e20b07d85b457a",
+                "shasum": ""
+            },
+            "require": {
+                "composer-plugin-api": "^1.0",
+                "php": "^5.3|^7",
+                "squizlabs/php_codesniffer": "^2|^3"
+            },
+            "require-dev": {
+                "composer/composer": "*",
+                "phpcompatibility/php-compatibility": "^9.0",
+                "sensiolabs/security-checker": "^4.1.0"
+            },
+            "type": "composer-plugin",
+            "extra": {
+                "class": "Dealerdirect\\Composer\\Plugin\\Installers\\PHPCodeSniffer\\Plugin"
+            },
+            "autoload": {
+                "psr-4": {
+                    "Dealerdirect\\Composer\\Plugin\\Installers\\PHPCodeSniffer\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Franck Nijhof",
+                    "email": "franck.nijhof@dealerdirect.com",
+                    "homepage": "http://www.frenck.nl",
+                    "role": "Developer / IT Manager"
+                }
+            ],
+            "description": "PHP_CodeSniffer Standards Composer Installer Plugin",
+            "homepage": "http://www.dealerdirect.com",
+            "keywords": [
+                "PHPCodeSniffer",
+                "PHP_CodeSniffer",
+                "code quality",
+                "codesniffer",
+                "composer",
+                "installer",
+                "phpcs",
+                "plugin",
+                "qa",
+                "quality",
+                "standard",
+                "standards",
+                "style guide",
+                "stylecheck",
+                "tests"
+            ],
+            "time": "2020-01-29T20:22:20+00:00"
+        },
+        {
+            "name": "drupal/coder",
+            "version": "8.3.8",
+            "source": {
+                "type": "git",
+                "url": "https://git.drupalcode.org/project/coder.git",
+                "reference": "e53e75b45842a5d2b454b08c318a17f57339e60e"
+            },
+            "require": {
+                "ext-mbstring": "*",
+                "php": ">=7.0.8",
+                "squizlabs/php_codesniffer": "^3.5.4",
+                "symfony/yaml": ">=2.0.5"
+            },
+            "require-dev": {
+                "phpstan/phpstan": "^0.12.5",
+                "phpunit/phpunit": "^6.0 || ^7.0"
+            },
+            "type": "phpcodesniffer-standard",
+            "autoload": {
+                "psr-4": {
+                    "Drupal\\": "coder_sniffer/Drupal/",
+                    "DrupalPractice\\": "coder_sniffer/DrupalPractice/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "GPL-2.0+"
+            ],
+            "description": "Coder is a library to review Drupal code.",
+            "homepage": "https://www.drupal.org/project/coder",
+            "keywords": [
+                "code review",
+                "phpcs",
+                "standards"
+            ],
+            "time": "2020-03-08T19:03:35+00:00"
+        },
+        {
+            "name": "squizlabs/php_codesniffer",
+            "version": "3.5.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
+                "reference": "dceec07328401de6211037abbb18bda423677e26"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/dceec07328401de6211037abbb18bda423677e26",
+                "reference": "dceec07328401de6211037abbb18bda423677e26",
+                "shasum": ""
+            },
+            "require": {
+                "ext-simplexml": "*",
+                "ext-tokenizer": "*",
+                "ext-xmlwriter": "*",
+                "php": ">=5.4.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.0 || ^5.0 || ^6.0 || ^7.0"
+            },
+            "bin": [
+                "bin/phpcs",
+                "bin/phpcbf"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.x-dev"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Greg Sherwood",
+                    "role": "lead"
+                }
+            ],
+            "description": "PHP_CodeSniffer tokenizes PHP, JavaScript and CSS files and detects violations of a defined set of coding standards.",
+            "homepage": "https://github.com/squizlabs/PHP_CodeSniffer",
+            "keywords": [
+                "phpcs",
+                "standards"
+            ],
+            "time": "2020-01-30T22:20:29+00:00"
+        }
+    ],
     "aliases": [],
     "minimum-stability": "dev",
     "stability-flags": [],