diff --git a/cypress/e2e/plugins/0-mock-plugin-tests/single-plugin-test.cypress.js b/cypress/e2e/plugins/0-mock-plugin-tests/single-plugin-test.cypress.js
index 23347642d8..b64ca78a0a 100644
--- a/cypress/e2e/plugins/0-mock-plugin-tests/single-plugin-test.cypress.js
+++ b/cypress/e2e/plugins/0-mock-plugin-tests/single-plugin-test.cypress.js
@@ -57,7 +57,7 @@ describe('Single Plugin Test', async () => {
       .should('have.html', '<strong>abc</strong>')
   })
 
-  it('Loads plugin-foo global correctly', () => {
+  it('Loads plugin-foo function correctly', () => {
     waitForApplication()
     cy.visit('/plugin-foo')
     cy.get('#test-foo-emphasize-global-function')
diff --git a/cypress/fixtures/plugins/plugin-foo/globals.js b/cypress/fixtures/plugins/plugin-foo/globals.js
index 604a3e30c4..1ba0031835 100644
--- a/cypress/fixtures/plugins/plugin-foo/globals.js
+++ b/cypress/fixtures/plugins/plugin-foo/globals.js
@@ -1,2 +1,2 @@
-const { addGlobal } = require('govuk-prototype-kit').views
-addGlobal('fooEmphasize', (content) => `<em>${content}</em>`, { renderAsHtml: true })
+const { addFunction } = require('govuk-prototype-kit').views
+addFunction('fooEmphasize', (content) => `<em>${content}</em>`, { renderAsHtml: true })
diff --git a/lib/globals/api.js b/lib/globals/api.js
index ca7553f70f..37a2d2b90a 100644
--- a/lib/globals/api.js
+++ b/lib/globals/api.js
@@ -23,15 +23,19 @@ function addGlobalToEnvironment (name, fn, config) {
   environment.addGlobal(name, fnToAdd)
 }
 
-function addGlobal (name, fn, config) {
+function addFunction (name, fn, config) {
   runWhenEnvIsAvailable(() => {
-    addGlobalToEnvironment(name, fn, config)
+    if (typeof fn === 'function') {
+      addGlobalToEnvironment(name, fn, config)
+    } else {
+      console.warn(`Couldn't add function [${name}] as it is not a function`)
+    }
   })
 }
 
-function getGlobal (name) {
+function getFunction (name) {
   if (!environment) {
-    console.warn(`Trying to get global before the environment is set, couldn't retrieve global [${name}]`)
+    console.warn(`Trying to get a function before the environment is set, couldn't retrieve function [${name}]`)
   } else {
     try {
       return environment.getGlobal(name)
@@ -55,8 +59,8 @@ function setEnvironment (env) {
 
 module.exports = {
   external: {
-    addGlobal,
-    getGlobal
+    addFunction,
+    getFunction
   },
   setEnvironment
 }
diff --git a/lib/globals/globals.test.js b/lib/globals/globals.test.js
index ac567814c8..cae406f9cf 100644
--- a/lib/globals/globals.test.js
+++ b/lib/globals/globals.test.js
@@ -14,7 +14,7 @@ describe('Globals', () => {
     const fn = () => {}
 
     api.setEnvironment(env)
-    api.external.addGlobal('my-great-global', fn)
+    api.external.addFunction('my-great-global', fn)
 
     expect(env.addGlobal).toHaveBeenCalledWith('my-great-global', fn)
   })
@@ -25,15 +25,15 @@ describe('Globals', () => {
 
     api.setEnvironment(env)
 
-    expect(api.external.getGlobal('my-great-global')).toBe(fn)
+    expect(api.external.getFunction('my-great-global')).toBe(fn)
   })
 
   it('Should log a warning when trying to get a global before the environment is set', () => {
     jest.spyOn(console, 'warn').mockImplementation(() => {})
 
-    api.external.getGlobal('my-great-global')
+    api.external.getFunction('my-great-global')
 
-    expect(console.warn).toHaveBeenCalledWith('Trying to get global before the environment is set, couldn\'t retrieve global [my-great-global]')
+    expect(console.warn).toHaveBeenCalledWith('Trying to get a function before the environment is set, couldn\'t retrieve function [my-great-global]')
   })
 
   it('Should log a warning when trying to get a global that doesn\'t exist', () => {
@@ -44,7 +44,7 @@ describe('Globals', () => {
     }
 
     api.setEnvironment(env)
-    api.external.getGlobal('my-great-global')
+    api.external.getFunction('my-great-global')
 
     expect(console.warn).toHaveBeenCalledWith('Couldn\'t retrieve global [my-great-global]')
   })
@@ -61,7 +61,7 @@ describe('Globals', () => {
     api.setEnvironment(env)
 
     expect(() => {
-      api.external.getGlobal('my-great-global')
+      api.external.getFunction('my-great-global')
     }).toThrow(error)
   })
 
@@ -69,7 +69,7 @@ describe('Globals', () => {
     const env = { addGlobal: jest.fn() }
     const fn = () => {}
 
-    api.external.addGlobal('my-great-global', fn)
+    api.external.addFunction('my-great-global', fn)
     api.setEnvironment(env)
 
     expect(env.addGlobal).toHaveBeenCalledWith('my-great-global', fn)
@@ -79,9 +79,9 @@ describe('Globals', () => {
     const namesInOrder = []
     const env = { addGlobal: jest.fn((name) => { namesInOrder.push(name) }) }
 
-    api.external.addGlobal('my-great-global', () => {})
-    api.external.addGlobal('someone-elses-global', () => {})
-    api.external.addGlobal('a-third-global', () => {})
+    api.external.addFunction('my-great-global', () => {})
+    api.external.addFunction('someone-elses-global', () => {})
+    api.external.addFunction('a-third-global', () => {})
     api.setEnvironment(env)
 
     expect(namesInOrder).toEqual(['my-great-global', 'someone-elses-global', 'a-third-global'])
diff --git a/prototype-starter/app/globals.js b/prototype-starter/app/globals.js
index 68bcb5e71f..9bbe06cb53 100644
--- a/prototype-starter/app/globals.js
+++ b/prototype-starter/app/globals.js
@@ -1,2 +1,2 @@
 const govukPrototypeKit = require('govuk-prototype-kit')
-const addGlobal = govukPrototypeKit.views.addGlobal
+const addGlobal = govukPrototypeKit.views.addFunction