diff --git a/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.cpp b/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.cpp
index 4a93bc41eec..abe30f20809 100644
--- a/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.cpp
+++ b/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.cpp
@@ -26,7 +26,9 @@
 #include "source/pal/PalAttClient.h"
 #include "source/pal/PalSecurityManager.h"
 #include "source/pal/PalGap.h"
+#if BLE_FEATURE_SIGNING
 #include "source/pal/PalSigningMonitor.h"
+#endif //BLE_FEATURE_SIGNING
 #include "source/pal/PalAttClientToGattClient.h"
 
 #include "source/BLEInstanceBaseImpl.h"
@@ -283,6 +285,7 @@ PalGattClient &BLEInstanceBase::getPalGattClient()
 #if BLE_FEATURE_SECURITY
 ble::impl::SecurityManager &BLEInstanceBase::getSecurityManagerImpl()
 {
+#if BLE_FEATURE_SIGNING
     // Creation of a proxy monitor to let the security manager register to
     // the gatt client and gatt server.
     static struct : ble::PalSigningMonitor {
@@ -296,11 +299,14 @@ ble::impl::SecurityManager &BLEInstanceBase::getSecurityManagerImpl()
 #endif // BLE_FEATURE_GATT_SERVER
         }
     } signing_event_monitor;
+#endif //BLE_FEATURE_SIGNING
 
     static ble::impl::SecurityManager m_instance(
         ble::impl::PalSecurityManager::get_security_manager(),
-        getGapImpl(),
-        signing_event_monitor
+        getGapImpl()
+#if BLE_FEATURE_SIGNING
+        , signing_event_monitor
+#endif //BLE_FEATURE_SIGNING
 #if BLE_FEATURE_PRIVACY
         , getPrivateAddressRegistry()
 #endif //BLE_FEATURE_PRIVACY
diff --git a/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.h b/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.h
index 9d2289ae6d3..16ad08d4d2d 100644
--- a/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.h
+++ b/connectivity/FEATURE_BLE/source/cordio/source/BLEInstanceBaseImpl.h
@@ -54,8 +54,9 @@
 #endif
 
 namespace ble {
-
+#if BLE_FEATURE_SIGNING
 class PalSigningMonitor;
+#endif //BLE_FEATURE_SIGNING
 
 namespace impl {
 
@@ -70,8 +71,9 @@ class BLEInstanceBase final : public ble::BLEInstanceBase {
     using Timeout = mbed::Timeout;
     using Timer   = mbed::Timer;
 #endif
-
+#if BLE_FEATURE_SIGNING
     friend PalSigningMonitor;
+#endif //BLE_FEATURE_SIGNING
 
     /**
      * Construction with an HCI driver.
diff --git a/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.cpp b/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.cpp
index bd28238352d..c770ab932b7 100644
--- a/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.cpp
+++ b/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.cpp
@@ -1629,7 +1629,9 @@ GattServer::GattServer() :
     updatesEnabledCallback(nullptr),
     updatesDisabledCallback(nullptr),
     confirmationReceivedCallback(nullptr),
+#if BLE_FEATURE_SIGNING
     _signing_event_handler(nullptr),
+#endif //BLE_FEATURE_SIGNING
     cccds(),
     cccd_values(),
     cccd_handles(),
@@ -1645,12 +1647,14 @@ GattServer::GattServer() :
 {
 }
 
+#if BLE_FEATURE_SIGNING
 void GattServer::set_signing_event_handler(
     PalSigningMonitorEventHandler *signing_event_handler
 )
 {
     _signing_event_handler = signing_event_handler;
 }
+#endif //BLE_FEATURE_SIGNING
 
 void GattServer::onDataSent(const DataSentCallback_t &callback)
 {
diff --git a/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.h b/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.h
index 73374c50b13..fbef21aa46b 100644
--- a/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.h
+++ b/connectivity/FEATURE_BLE/source/cordio/source/GattServerImpl.h
@@ -39,7 +39,9 @@
 
 #include "source/BLEInstanceBase.h"
 #include "source/generic/GattServerEvents.h"
+#if BLE_FEATURE_SIGNING
 #include "source/pal/PalSigningMonitor.h"
+#endif //BLE_FEATURE_SIGNING
 
 namespace ble {
 
@@ -49,10 +51,16 @@ class PalGenericAccessService;
 class BLE;
 
 namespace impl {
-class GattServer : public PalSigningMonitor {
+class GattServer
+#if BLE_FEATURE_SIGNING
+    : public PalSigningMonitor
+#endif //BLE_FEATURE_SIGNING
+{
     friend ble::BLE;
     friend ble::PalAttClient;
+#if BLE_FEATURE_SIGNING
     friend PalSigningMonitor;
+#endif //BLE_FEATURE_SIGNING
     friend PalGenericAccessService;
 
     using EventHandler = ble::GattServer::EventHandler;
@@ -214,11 +222,11 @@ class GattServer : public PalSigningMonitor {
     void initialize();
 
     static uint8_t atts_auth_cb(dmConnId_t connId, uint8_t permit, uint16_t handle);
-
+#if BLE_FEATURE_SIGNING
     void set_signing_event_handler(
         PalSigningMonitorEventHandler *signing_event_handler
     ) override;
-
+#endif //BLE_FEATURE_SIGNING
 private:
 
     GattServer();
@@ -361,8 +369,9 @@ class GattServer : public PalSigningMonitor {
      * The registered callback handler for confirmation received events.
      */
     EventCallback_t confirmationReceivedCallback;
-
+#if BLE_FEATURE_SIGNING
     PalSigningMonitorEventHandler *_signing_event_handler;
+#endif //BLE_FEATURE_SIGNING
 
     attsCccSet_t cccds[MBED_CONF_BLE_API_IMPLEMENTATION_MAX_CCCD_COUNT];
     uint16_t cccd_values[MBED_CONF_BLE_API_IMPLEMENTATION_MAX_CCCD_COUNT];
diff --git a/connectivity/FEATURE_BLE/source/generic/GattClientImpl.h b/connectivity/FEATURE_BLE/source/generic/GattClientImpl.h
index bf13e13e6ec..ee1a3e23dfa 100644
--- a/connectivity/FEATURE_BLE/source/generic/GattClientImpl.h
+++ b/connectivity/FEATURE_BLE/source/generic/GattClientImpl.h
@@ -30,7 +30,9 @@
 #include "ble/gatt/CharacteristicDescriptorDiscovery.h"
 #include "ble/gatt/GattCallbackParamTypes.h"
 #include "source/pal/PalGattClient.h"
+#if BLE_FEATURE_SIGNING
 #include "source/pal/PalSigningMonitor.h"
+#endif //BLE_FEATURE_SIGNING
 #include "ble/GattClient.h"
 
 namespace ble {
@@ -40,9 +42,13 @@ class BLEInstanceBase;
 namespace impl {
 
 class GattClient :
+#if BLE_FEATURE_SIGNING
     public PalSigningMonitor,
+#endif //BLE_FEATURE_SIGNING
     public PalGattClientEventHandler {
+#if BLE_FEATURE_SIGNING
     friend PalSigningMonitor;
+#endif //BLE_FEATURE_SIGNING
     friend BLEInstanceBase;
 public:
     using EventHandler = ble::GattClient::EventHandler;
@@ -163,11 +169,12 @@ class GattClient :
     /*                    private implementation follows                     */
 
 private:
+#if BLE_FEATURE_SIGNING
     /**
      * @see ble::PalSigningMonitor::set_signing_event_handler
      */
     void set_signing_event_handler(PalSigningMonitorEventHandler *signing_event_handler) override;
-
+#endif //BLE_FEATURE_SIGNING
     /**
      * @see PalGattClient::EventHandler::on_att_mtu_change
      */
@@ -244,7 +251,9 @@ class GattClient :
 
     PalGattClient &_pal_client;
     ServiceDiscovery::TerminationCallback_t _termination_callback;
+#if BLE_FEATURE_SIGNING
     PalSigningMonitorEventHandler *_signing_event_handler;
+#endif // BLE_FEATURE_SIGNING
     mutable ProcedureControlBlock *control_blocks;
     bool _is_reseting;
 
diff --git a/connectivity/FEATURE_BLE/source/generic/SecurityManagerImpl.h b/connectivity/FEATURE_BLE/source/generic/SecurityManagerImpl.h
index 22a92f736bb..8f144a755a8 100644
--- a/connectivity/FEATURE_BLE/source/generic/SecurityManagerImpl.h
+++ b/connectivity/FEATURE_BLE/source/generic/SecurityManagerImpl.h
@@ -33,7 +33,9 @@
 
 #include "source/pal/GapTypes.h"
 #include "source/pal/PalConnectionMonitor.h"
+#if BLE_FEATURE_SIGNING
 #include "source/pal/PalSigningMonitor.h"
+#endif //BLE_FEATURE_SIGNING
 #include "source/pal/PalSecurityManager.h"
 
 #include "source/generic/SecurityDb.h"
@@ -479,15 +481,19 @@ class SecurityManager :
 public:
     SecurityManager(
         ble::PalSecurityManager &palImpl,
-        ble::PalConnectionMonitor &connMonitorImpl,
-        ble::PalSigningMonitor &signingMonitorImpl
+        ble::PalConnectionMonitor &connMonitorImpl
+#if BLE_FEATURE_SIGNING
+        , ble::PalSigningMonitor &signingMonitorImpl
+#endif //BLE_FEATURE_SIGNING
 #if BLE_FEATURE_PRIVACY
         , PrivateAddressController &privateAddressController
 #endif // BLE_FEATURE_PRIVACY
     ) : eventHandler(nullptr),
         _pal(palImpl),
         _connection_monitor(connMonitorImpl),
+#if BLE_FEATURE_SIGNING
         _signing_monitor(signingMonitorImpl),
+#endif //BLE_FEATURE_SIGNING
         _db(nullptr),
 #if BLE_FEATURE_PRIVACY
         _private_address_controller(privateAddressController),
@@ -681,7 +687,9 @@ class SecurityManager :
 
     PalSecurityManager &_pal;
     PalConnectionMonitor &_connection_monitor;
+#if BLE_FEATURE_SIGNING
     PalSigningMonitor &_signing_monitor;
+#endif //BLE_FEATURE_SIGNING
 
     SecurityDb *_db;
 #if BLE_FEATURE_PRIVACY
diff --git a/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.cpp b/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.cpp
index 6fe57930429..037e7831842 100644
--- a/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.cpp
+++ b/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.cpp
@@ -184,7 +184,7 @@ ble_error_t PalAttClientToGattClient::write_without_response(
     );
 }
 
-
+#if BLE_FEATURE_SIGNING
 ble_error_t PalAttClientToGattClient::signed_write_without_response(
     connection_handle_t connection_handle,
     attribute_handle_t characteristic_value_handle,
@@ -197,7 +197,7 @@ ble_error_t PalAttClientToGattClient::signed_write_without_response(
         value
     );
 }
-
+#endif // BLE_FEATURE_SIGNING
 
 ble_error_t PalAttClientToGattClient::write_attribute(
     connection_handle_t connection_handle,
diff --git a/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.h b/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.h
index bb843760e67..860f8e3822a 100644
--- a/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.h
+++ b/connectivity/FEATURE_BLE/source/pal/PalAttClientToGattClient.h
@@ -140,7 +140,7 @@ class PalAttClientToGattClient : public PalGattClient {
         attribute_handle_t characteristic_value_handle,
         const Span<const uint8_t>& value
     ) override;
-
+#if BLE_FEATURE_SIGNING
     /**
      * @see ble::PalGattClient::signed_write_without_response
      */
@@ -149,7 +149,7 @@ class PalAttClientToGattClient : public PalGattClient {
         attribute_handle_t characteristic_value_handle,
         const Span<const uint8_t>& value
     ) override;
-
+#endif //BLE_FEATURE_SIGNING
     /**
      * @see ble::PalGattClient::write_attribute
      */
diff --git a/connectivity/FEATURE_BLE/source/pal/PalGattClient.h b/connectivity/FEATURE_BLE/source/pal/PalGattClient.h
index c9a11d2b60c..677de1d29af 100644
--- a/connectivity/FEATURE_BLE/source/pal/PalGattClient.h
+++ b/connectivity/FEATURE_BLE/source/pal/PalGattClient.h
@@ -472,7 +472,7 @@ class PalGattClient {
         attribute_handle_t characteristic_value_handle,
         const Span<const uint8_t>& value
     ) = 0;
-
+#if BLE_FEATURE_SIGNING
     /**
      * Send a Signed Write without Response command to the server.
      *
@@ -494,7 +494,7 @@ class PalGattClient {
         attribute_handle_t characteristic_value_handle,
         const Span<const uint8_t>& value
     ) = 0;
-
+#endif //BLE_FEATURE_SIGNING
     /**
      * Send a write request to the server.
      *