diff --git a/lib/http.ts b/lib/http.ts
index e58ea49..672fa61 100644
--- a/lib/http.ts
+++ b/lib/http.ts
@@ -57,17 +57,26 @@ export default class HttpBase {
     this.options = this.setDefaults(options);
     this.rootHttp = axios.create({
       ...options.requestConfig,
-      baseURL: `${options.host}/api/v1`,
+      baseURL: options.baseURL,
     });
     this.http = axios.create({
       ...options.requestConfig,
-      baseURL: `${options.host}/api/v1/namespaces/${this.options.namespace}`,
+      baseURL: options.namespaceBaseURL,
     });
   }
 
   private setDefaults(options: FireFlyOptionsInput): FireFlyOptions {
+    const baseURLSet = (options.baseURL ?? '') !== '' && (options.namespaceBaseURL ?? '' !== '');
+    if (!baseURLSet && (options.host ?? '') === '') {
+      throw new Error('Invalid options. Option host, or baseURL and namespaceBaseURL must be set.');
+    }
+
     return {
       ...options,
+      baseURL: baseURLSet ? options.baseURL : `${options.host}/api/v1`,
+      namespaceBaseURL: baseURLSet
+        ? options.namespaceBaseURL
+        : `${options.host}/api/v1/namespaces/${options.namespace}`,
       namespace: options.namespace ?? 'default',
       websocket: {
         ...options.websocket,
diff --git a/lib/interfaces.ts b/lib/interfaces.ts
index 56f4185..1c0a96c 100644
--- a/lib/interfaces.ts
+++ b/lib/interfaces.ts
@@ -42,6 +42,8 @@ export interface FireFlyOptionsInput {
   namespace?: string;
   username?: string;
   password?: string;
+  baseURL?: string;
+  namespaceBaseURL?: string;
   websocket?: {
     host?: string;
     reconnectDelay?: number;
diff --git a/package-lock.json b/package-lock.json
index dff2b98..8d64618 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@hyperledger/firefly-sdk",
-  "version": "1.2.9",
+  "version": "1.2.11",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@hyperledger/firefly-sdk",
-      "version": "1.2.9",
+      "version": "1.2.11",
       "license": "Apache-2.0",
       "dependencies": {
         "axios": "^0.26.1",
diff --git a/package.json b/package.json
index 7ff65b5..e4953ae 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperledger/firefly-sdk",
-  "version": "1.2.10",
+  "version": "1.2.11",
   "description": "Client SDK for Hyperledger FireFly",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -45,4 +45,4 @@
     "form-data": "^4.0.0",
     "ws": "^8.5.0"
   }
-}
\ No newline at end of file
+}