Re-jigged some of the registration routes and modified the buttons/links to use them

src/Controller/OrganisationRegistrationController.php

@@ -285,7 +285,7 @@ class OrganisationRegistrationController extends SimpleController
             'name' => $organisation->name
         ]);
 
-        return $response->withRedirect($this->ci->router->pathFor('uri_organisation', ['slug' => $organisation->slug]));
+        return $response->withJson([], 200);
     }
 
     /**
@@ -433,7 +433,7 @@ class OrganisationRegistrationController extends SimpleController
             'name' => $organisation->name
         ]);
 
-        return $response->withRedirect($this->ci->router->pathFor('uri_organisations'));
+        return $response->withJson([], 200);
     }
 
     /**
@@ -572,7 +572,7 @@ class OrganisationRegistrationController extends SimpleController
         return $this->ci->view->render($response, 'modals/organisation.html.twig', [
             'organisation' => $organisation,
             'form'  => [
-                'action'      => 'api/organisations/register',
+                'action'      => 'api/organisations/registeration',
                 'method'      => 'POST',
                 'fields'      => $fields,
                 'submit_text' => $translator->translate('REGISTER'),