diff --git a/.gitignore b/.gitignore
index 8f784de9f..bc97d1d63 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,3 +36,6 @@ yarn-debug.log*
 .yarn-integrity
 
 .env
+
+# Code coverage results
+/coverage
diff --git a/Gemfile b/Gemfile
index 5ba5edb6d..1d895073c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,6 +30,7 @@ group :development, :test do
   gem "factory_bot_rails"
   gem "pry-byebug"
   gem "selenium-webdriver"
+  gem "simplecov"
   %w[rspec-core rspec-expectations rspec-mocks rspec-rails rspec-support].each do |lib|
     gem lib, git: "https://github.com/rspec/#{lib}.git", branch: "main"
   end
diff --git a/Gemfile.lock b/Gemfile.lock
index 18b43466a..46a7f1ad1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -129,6 +129,7 @@ GEM
     crass (1.0.6)
     deep_merge (1.2.1)
     diff-lcs (1.4.4)
+    docile (1.4.0)
     dotenv (2.7.6)
     dotenv-rails (2.7.6)
       dotenv (= 2.7.6)
@@ -280,6 +281,12 @@ GEM
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
     semantic_range (3.0.0)
+    simplecov (0.21.2)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.3)
     sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -346,6 +353,7 @@ DEPENDENCIES
   rubocop-rails
   scss_lint-govuk
   selenium-webdriver
+  simplecov
   tzinfo-data
   web-console (>= 4.1.0)
   webpacker (~> 5.0)
diff --git a/spec/controllers/case_logs_controller_spec.rb b/spec/controllers/case_logs_controller_spec.rb
index 798074466..75c80705c 100644
--- a/spec/controllers/case_logs_controller_spec.rb
+++ b/spec/controllers/case_logs_controller_spec.rb
@@ -33,7 +33,6 @@ RSpec.describe CaseLogsController, type: :controller do
     describe "GET #edit" do
       it "returns a success response" do
         get :edit, params: { id: id }
-        puts response
         expect(response).to be_successful
       end
     end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index efc2ff51f..e559ad024 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -15,6 +15,18 @@
 # See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
 
 require "factory_bot"
+require "simplecov"
+
+SimpleCov.start "rails" do
+  add_filter "/bin/"
+  add_filter "/db/"
+  add_filter "/spec/"
+  add_filter "app/channels/application_cable/channel.rb"
+  add_filter "app/jobs/application_job.rb"
+  add_filter "app/mailers/application_mailer.rb"
+  add_filter "app/controllers/application_controller.rb"
+  add_filter "app/channels/application_cable/connection.rb"
+end
 
 RSpec.configure do |config|
   # rspec-expectations config goes here. You can use an alternate