diff --git a/packages/client/src/components/ClientApp.svelte b/packages/client/src/components/ClientApp.svelte
index c883dd4206..64b1712b89 100644
--- a/packages/client/src/components/ClientApp.svelte
+++ b/packages/client/src/components/ClientApp.svelte
@@ -85,18 +85,8 @@
       builderStore.actions.notifyLoaded()
     }
   })
-
-  // TODO: remove. this is a test to render the first custom component
-  console.log(window["##BUDIBASE_CUSTOM_COMPONENTS##"]?.[0])
-  const custom = window["##BUDIBASE_CUSTOM_COMPONENTS##"]?.[0]?.Component
 </script>
 
-{#if custom}
-  <div style="padding: 20px;">
-    <svelte:component this={custom} />
-  </div>
-{/if}
-
 {#if dataLoaded}
   <div
     id="spectrum-root"
diff --git a/packages/client/src/components/Component.svelte b/packages/client/src/components/Component.svelte
index a7f506a387..cff6edc8ef 100644
--- a/packages/client/src/components/Component.svelte
+++ b/packages/client/src/components/Component.svelte
@@ -11,8 +11,6 @@
 <script>
   import { getContext, setContext, onMount, onDestroy } from "svelte"
   import { writable, get } from "svelte/store"
-  import * as AppComponents from "components/app"
-  import Router from "./Router.svelte"
   import {
     enrichProps,
     propsAreSame,
@@ -180,7 +178,7 @@
 
     // Pull definition and constructor
     const component = instance._component
-    constructor = getComponentConstructor(component)
+    constructor = componentStore.actions.getComponentConstructor(component)
     definition = componentStore.actions.getComponentDefinition(component)
     if (!definition) {
       return
@@ -237,16 +235,6 @@
     })
   }
 
-  // Gets the component constructor for the specified component
-  const getComponentConstructor = component => {
-    const split = component?.split("/")
-    const name = split?.[split.length - 1]
-    if (name === "screenslot" && !insideScreenslot) {
-      return Router
-    }
-    return AppComponents[name]
-  }
-
   const getSettingsDefinitionMap = settingsDefinition => {
     let map = {}
     settingsDefinition?.forEach(setting => {
diff --git a/packages/client/src/components/Screen.svelte b/packages/client/src/components/Screen.svelte
index 3ec8d1ea52..12e6803aea 100644
--- a/packages/client/src/components/Screen.svelte
+++ b/packages/client/src/components/Screen.svelte
@@ -13,7 +13,22 @@
   $: routeStore.actions.setRouteParams(params || {})
 
   // Get the screen definition for the current route
-  $: screenDefinition = $screenStore.activeScreen?.props
+  $: screenDefinition = getScreenDefinition($screenStore.activeScreen?.props)
+
+  const getScreenDefinition = definition => {
+    const test = {
+      _component: "test",
+      _id: "asfdasdfefgerdgrfdg",
+      _styles: {
+        normal: {},
+      },
+      text: "This is a text prop!",
+    }
+    return {
+      ...definition,
+      _children: [...definition._children, test],
+    }
+  }
 
   onMount(() => {
     // Mark the router as loaded whenever the screen mounts
diff --git a/packages/client/src/index.js b/packages/client/src/index.js
index c88afe59ba..32b242bc69 100644
--- a/packages/client/src/index.js
+++ b/packages/client/src/index.js
@@ -1,5 +1,5 @@
 import ClientApp from "./components/ClientApp.svelte"
-import { builderStore, appStore, devToolsStore } from "./stores"
+import { componentStore, builderStore, appStore, devToolsStore } from "./stores"
 import loadSpectrumIcons from "@budibase/bbui/spectrum-icons-rollup.js"
 import { get } from "svelte/store"
 
@@ -38,6 +38,13 @@ const loadBudibase = () => {
   const enableDevTools = !get(builderStore).inBuilder && get(appStore).isDevApp
   devToolsStore.actions.setEnabled(enableDevTools)
 
+  // Register any custom components
+  if (window["##BUDIBASE_CUSTOM_COMPONENTS##"]) {
+    window["##BUDIBASE_CUSTOM_COMPONENTS##"].forEach(component => {
+      componentStore.actions.registerCustomComponent(component)
+    })
+  }
+
   // Create app if one hasn't been created yet
   if (!app) {
     app = new ClientApp({
diff --git a/packages/client/src/stores/components.js b/packages/client/src/stores/components.js
index a7426113e2..2500ea2a41 100644
--- a/packages/client/src/stores/components.js
+++ b/packages/client/src/stores/components.js
@@ -4,6 +4,10 @@ import { findComponentById, findComponentPathById } from "../utils/components"
 import { devToolsStore } from "./devTools"
 import { screenStore } from "./screens"
 import { builderStore } from "./builder"
+import Router from "../components/Router.svelte"
+import * as AppComponents from "../components/app/index.js"
+
+const budibasePrefix = "@budibase/standard-components/"
 
 const createComponentStore = () => {
   const store = writable({})
@@ -34,6 +38,7 @@ const createComponentStore = () => {
         findComponentPathById(asset?.props, selectedComponentId) || []
 
       return {
+        customComponentManifest: $store.customComponentManifest,
         selectedComponentInstance: $store[selectedComponentId],
         selectedComponent: component,
         selectedComponentDefinition: definition,
@@ -68,9 +73,60 @@ const createComponentStore = () => {
   }
 
   const getComponentDefinition = type => {
-    const prefix = "@budibase/standard-components/"
-    type = type?.replace(prefix, "")
-    return type ? Manifest[type] : null
+    if (!type) {
+      return null
+    }
+
+    // Screenslot is an edge case
+    if (type === "screenslot") {
+      type = `${budibasePrefix}${type}`
+    }
+
+    // Handle built-in components
+    if (type.startsWith(budibasePrefix)) {
+      type = type.replace(budibasePrefix, "")
+      return type ? Manifest[type] : null
+    }
+
+    // Handle custom components
+    const { customComponentManifest } = get(store)
+    return customComponentManifest?.[type]?.schema?.schema
+  }
+
+  const getComponentConstructor = type => {
+    if (!type) {
+      return null
+    }
+    if (type === "screenslot") {
+      return Router
+    }
+
+    // Handle budibase components
+    if (type.startsWith(budibasePrefix)) {
+      const split = type.split("/")
+      const name = split[split.length - 1]
+      return AppComponents[name]
+    }
+
+    // Handle custom components
+    const { customComponentManifest } = get(store)
+    return customComponentManifest?.[type]?.Component
+  }
+
+  const registerCustomComponent = ({ Component, schema }) => {
+    if (!Component || !schema?.schema?.name) {
+      return
+    }
+    store.update(state => {
+      if (!state.customComponentManifest) {
+        state.customComponentManifest = {}
+      }
+      state.customComponentManifest[schema.schema.name] = {
+        schema,
+        Component,
+      }
+      return state
+    })
   }
 
   return {
@@ -81,6 +137,8 @@ const createComponentStore = () => {
       isComponentRegistered,
       getComponentById,
       getComponentDefinition,
+      getComponentConstructor,
+      registerCustomComponent,
     },
   }
 }