diff --git a/tools/targets/LPC55S69.py b/tools/targets/LPC55S69.py
new file mode 100644
index 0000000000..eab0c77e21
--- /dev/null
+++ b/tools/targets/LPC55S69.py
@@ -0,0 +1,45 @@
+ #
+ # Copyright (c) 2018 Arm Limited
+ #
+ # Licensed under the Apache License Version 2.0 (the "License");
+ # you may not use this file except in compliance with the License.
+ # You may obtain a copy of the License at
+ #
+ #     http://www.apache.org/licenses/LICENSE-2.0
+ #
+ # Unless required by applicable law or agreed to in writing software
+ # distributed under the License is distributed on an "AS IS" BASIS
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either express or implied.
+ # See the License for the specific language governing permissions and
+ # limitations under the License.
+ #
+
+import os
+from os.path import abspath, basename, dirname, splitext
+from os.path import join as path_join
+import tempfile
+
+from tools.psa.tfm.bin_utils.assemble import Assembly
+
+SCRIPT_DIR = dirname(abspath(__file__))
+MBED_OS_ROOT = abspath(path_join(SCRIPT_DIR, os.pardir, os.pardir))
+LPC55S69_BASE = path_join(MBED_OS_ROOT, 'targets', 'TARGET_NXP', 'TARGET_MCUXpresso_MCUS', 'TARGET_LPC55S69')
+
+def lpc55s69_tfm_bin(t_self, non_secure_bin):
+    tempdir = tempfile.mkdtemp()
+    flash_layout = path_join(LPC55S69_BASE, 'partition', 'flash_layout.h')
+    secure_bin = path_join(LPC55S69_BASE, 'TARGET_M33_NS', 'device', 'tfm.bin')
+    ns_bin_name, ns_bin_ext = splitext(basename(non_secure_bin))
+    concatenated_bin = path_join(tempdir, 'tfm_' + ns_bin_name + ns_bin_ext)
+
+    #1. Concatenate secure TFM and non-secure mbed binaries
+    output = Assembly(flash_layout, concatenated_bin)
+    output.add_image(secure_bin, "SECURE")
+    output.add_image(non_secure_bin, "NON_SECURE")
+
+    #2. Delete the original binary file name
+    os.remove(non_secure_bin)
+
+    #3. Rename to new concatenated binary to the original binary file name
+    os.rename(concatenated_bin, non_secure_bin)
+
diff --git a/tools/targets/__init__.py b/tools/targets/__init__.py
index 451116338d..fda5d44f42 100644
--- a/tools/targets/__init__.py
+++ b/tools/targets/__init__.py
@@ -598,6 +598,13 @@ class PSOC6Code:
         else:
             psoc6_complete(t_self, elf, binf)
 
+class LPC55S69Code:
+    """LPC55S69 Hooks"""
+    @staticmethod
+    def binary_hook(t_self, resources, elf, binf):
+        from tools.targets.LPC55S69 import lpc55s69_tfm_bin
+        lpc55s69_tfm_bin(t_self, binf)
+
 ################################################################################
 
 # Instantiate all public targets