diff --git a/inc/bluetooth/MicroBitBLEManager.h b/inc/bluetooth/MicroBitBLEManager.h
index 6110a9c..60c1cef 100644
--- a/inc/bluetooth/MicroBitBLEManager.h
+++ b/inc/bluetooth/MicroBitBLEManager.h
@@ -267,24 +267,6 @@ class MicroBitBLEManager : MicroBitComponent
       * More information can be found at https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power
       */
     int advertiseEddystoneUid(const char* uid_namespace, const char* uid_instance, int8_t calibratedPower = MICROBIT_BLE_EDDYSTONE_DEFAULT_POWER, bool connectable = true, uint16_t interval = MICROBIT_BLE_EDDYSTONE_ADV_INTERVAL);
-
-    /**
-      * Set the content of Eddystone UID frames, but accepts a ManagedString as a namespace and instance.
-      *
-      * @param uid_namespace The namespace of the UID.
-      *
-      * @param uid_instance The value within the namespace.
-      *
-      * @param calibratedPower the transmission range of the beacon (Defaults to: 0xF0 ~10m).
-      *
-      * @param connectable true to keep bluetooth connectable for other services, false otherwise. (Defaults to true)
-      *
-      * @param interval the rate at which the micro:bit will advertise url frames. (Defaults to MICROBIT_BLE_EDDYSTONE_ADV_INTERVAL)
-      *
-      * @note The calibratedPower value ranges from -100 to +20 to a resolution of 1. The calibrated power should be binary encoded.
-      * More information can be found at https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power
-      */
-    int advertiseEddystoneUid(ManagedString uid_namespace, ManagedString uid_instance, int8_t calibratedPower = MICROBIT_BLE_EDDYSTONE_DEFAULT_POWER, bool connectable = true, uint16_t interval = MICROBIT_BLE_EDDYSTONE_ADV_INTERVAL);
 #endif
 
   private:
diff --git a/inc/bluetooth/MicroBitEddystone.h b/inc/bluetooth/MicroBitEddystone.h
index 41d9a70..981ccfb 100644
--- a/inc/bluetooth/MicroBitEddystone.h
+++ b/inc/bluetooth/MicroBitEddystone.h
@@ -79,9 +79,9 @@ class MicroBitEddystone
     /**
       * Set the content of Eddystone UID frames
       *
-      * @param uid_namespace: the uid namespace. Must 10 bytes long.
+      * @param uid_namespace the uid namespace. Must 10 bytes long.
       *
-      * @param uid_instance:  the uid instance value. Must 6 bytes long.
+      * @param uid_instance  the uid instance value. Must 6 bytes long.
       *
       * @param calibratedPower the transmission range of the beacon (Defaults to: 0xF0 ~10m).
       *
@@ -89,21 +89,6 @@ class MicroBitEddystone
       * More information can be found at https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power
       */
     int setUID(BLEDevice* ble, const char* uid_namespace, const char* uid_instance, int8_t calibratedPower = 0xF0);
-
-    /**
-      * Set the content of Eddystone UID frames, but accepts a ManagedString as a namespace and instance.
-      *
-      * @param uid_namespace The namespace of the UID.
-      *
-      * @param uid_instance The value within the namespace.
-      *
-      * @param calibratedPower the transmission range of the beacon (Defaults to: 0xF0 ~10m).
-      *
-      * @note The calibratedPower value ranges from -100 to +20 to a resolution of 1. The calibrated power should be binary encoded.
-      * More information can be found at https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power
-      */
-    int setUID(BLEDevice* ble, ManagedString uid_namespace, ManagedString uid_instance, int8_t calibratedPower = 0xF0);
-
 #endif
 
   private:
diff --git a/source/bluetooth/MicroBitBLEManager.cpp b/source/bluetooth/MicroBitBLEManager.cpp
index e9d5889..92f56e6 100644
--- a/source/bluetooth/MicroBitBLEManager.cpp
+++ b/source/bluetooth/MicroBitBLEManager.cpp
@@ -595,27 +595,6 @@ int MicroBitBLEManager::advertiseEddystoneUid(const char* uid_namespace, const c
 
     return ret;
 }
-
-/**
-  * Set the content of Eddystone UID frames, but accepts a ManagedString as a namespace and instance.
-  *
-  * @param uid_namespace The namespace of the UID.
-  *
-  * @param uid_instance The value within the namespace.
-  *
-  * @param calibratedPower the transmission range of the beacon (Defaults to: 0xF0 ~10m).
-  *
-  * @param connectable true to keep bluetooth connectable for other services, false otherwise. (Defaults to true)
-  *
-  * @param interval the rate at which the micro:bit will advertise url frames. (Defaults to MICROBIT_BLE_EDDYSTONE_ADV_INTERVAL)
-  *
-  * @note The calibratedPower value ranges from -100 to +20 to a resolution of 1. The calibrated power should be binary encoded.
-  * More information can be found at https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power
-  */
-int MicroBitBLEManager::advertiseEddystoneUid(ManagedString uid_namespace, ManagedString uid_instance, int8_t calibratedPower, bool connectable, uint16_t interval)
-{
-    return advertiseEddystoneUid((char *)uid_namespace.toCharArray(), (char *)uid_instance.toCharArray(), calibratedPower, connectable, interval);
-}
 #endif
 
 /**
diff --git a/source/bluetooth/MicroBitEddystone.cpp b/source/bluetooth/MicroBitEddystone.cpp
index d067f61..4d5c1c0 100644
--- a/source/bluetooth/MicroBitEddystone.cpp
+++ b/source/bluetooth/MicroBitEddystone.cpp
@@ -176,9 +176,9 @@ int MicroBitEddystone::setURL(BLEDevice* ble, ManagedString url, int8_t calibrat
 /**
   * Set the content of Eddystone UID frames
   *
-  * @param uid_namespace: the uid namespace. Must 10 bytes long.
+  * @param uid_namespace the uid namespace. Must 10 bytes long.
   *
-  * @param uid_instance:  the uid instance value. Must 6 bytes long.
+  * @param uid_instance  the uid instance value. Must 6 bytes long.
   *
   * @param calibratedPower the transmission range of the beacon (Defaults to: 0xF0 ~10m).
   *
@@ -187,7 +187,7 @@ int MicroBitEddystone::setURL(BLEDevice* ble, ManagedString url, int8_t calibrat
   */
 int MicroBitEddystone::setUID(BLEDevice* ble, const char* uid_namespace, const char* uid_instance, int8_t calibratedPower)
 {
-    if (uid_namespace == NULL || strlen(uid_namespace) == 0 || uid_instance == NULL || strlen(uid_instance) == 0)
+    if (uid_namespace == NULL || uid_instance == NULL)
         return MICROBIT_INVALID_PARAMETER;
 
     char uidData[EDDYSTONE_UID_NAMESPACE_MAX_LENGTH + EDDYSTONE_UID_INSTANCE_MAX_LENGTH];
@@ -212,21 +212,4 @@ int MicroBitEddystone::setUID(BLEDevice* ble, const char* uid_namespace, const c
     return MICROBIT_OK;
 }
 
-/**
-  * Set the content of Eddystone UID frames, but accepts a ManagedString as a namespace and instance.
-  *
-  * @param uid_namespace The namespace of the UID.
-  *
-  * @param uid_instance The value within the namespace.
-  *
-  * @param calibratedPower the transmission range of the beacon (Defaults to: 0xF0 ~10m).
-  *
-  * @note The calibratedPower value ranges from -100 to +20 to a resolution of 1. The calibrated power should be binary encoded.
-  * More information can be found at https://github.com/google/eddystone/tree/master/eddystone-uid#tx-power
-  */
-int MicroBitEddystone::setUID(BLEDevice* ble, ManagedString uid_namespace, ManagedString uid_instance, int8_t calibratedPower)
-{
-    return setUID(ble, (char *)uid_namespace.toCharArray(), (char *)uid_instance.toCharArray(), calibratedPower);
-}
-
 #endif