diff --git a/tools/review.py b/tools/review.py
new file mode 100755
index 00000000..8336dd9f
--- /dev/null
+++ b/tools/review.py
@@ -0,0 +1,107 @@
+#!/usr/bin/env python3
+
+import argparse
+import doorstop
+import os
+import subprocess
+import sys
+import tempfile
+
+""" A script to review Doorstop items and add extra fields: confidence
+level and optional comments. """
+
+parser = argparse.ArgumentParser(
+                    prog='review',
+                    description='Reviews Doorstop items and adds confidence and comment fields')
+
+parser.add_argument('itemname', help="Name of item to review e.g. TS1")
+parser.add_argument('-c', '--confidence', help="Specify the level of confidence (0.0-1.0)", type=float)
+parser.add_argument('-m', '--comment', help="Specify comment text (will overwrite)")
+
+args = parser.parse_args()
+
+tree = doorstop.build()
+
+def is_valid_confidence(n):
+    return n>=0.0 and n<=1.0
+
+
+try:
+    item = tree.find_item(args.itemname)
+except doorstop.common.DoorstopError as e:
+    print(e)
+    sys.exit(1)
+
+print(f"Found {item}")
+
+existing_comment = item.get("review-comments")
+
+if args.comment:
+    # replace comment with it
+    item.set("review-comments", args.comment)
+    print(f"Setting comment on {args.itemname} to CLI-supplied value")
+else:
+    editor = os.getenv("EDITOR")
+    if editor is None:
+        print("Warning: The EDITOR environment variable is not set. " +
+              "If you want to add a comment, set EDITOR to a text editor and re-run " +
+              "this command, or use the -m option")
+    else:
+        fd, path = tempfile.mkstemp()
+        try:
+            if existing_comment:
+                # Edit or replace
+                with os.fdopen(fd, 'w') as tmpfile:
+                    tmpfile.write(existing_comment.strip())
+                    tmpfile.write("\n")
+            else:
+                with os.fdopen(fd, 'w') as tmpfile:
+                    tmpfile.write(f"Add your comment on {item} here.")
+                    tmpfile.write("\n")
+
+            # Spawn editor
+            subprocess.run([editor, path])
+
+            with open(path, 'r') as tmpfile:
+                new_comment = tmpfile.read()
+            item.set("review-comments", new_comment)
+        finally:
+            os.remove(path)
+
+# now prompt for a confidence level
+existing_confidence = item.get("confidence")
+
+if existing_confidence is None:
+    existing_confidence = 0
+
+if args.confidence:
+    if is_valid_confidence(args.confidence):
+        new_confidence_int = args.confidence
+    else:
+        print(f"Error: Supplied confidence level {args.confidence} is not in the range 0.0 to 1.0.")
+        sys.exit(3)
+else:
+    while True:
+        print(f"\nPlease enter your confidence level (in %) that {item}'s sub-requirements are sufficient to satisfy item {item}.")
+
+        new_confidence_text = input(f"Please enter a number between 0 and 1 inclusive. (Default: {existing_confidence}):")
+
+        if new_confidence_text == "":
+            new_confidence_int = existing_confidence
+            break
+        try:
+            new_confidence_int = float(new_confidence_text)
+        except Exception as e:
+            print(f"Can't interpret that value as a number.")
+            continue
+
+        if is_valid_confidence(new_confidence_int):
+            break
+        else:
+            print(f"Please enter a number between 0 and 1.")
+
+print(f"Setting new confidence value of {new_confidence_int} to {item}")
+item.set("confidence", new_confidence_int)
+
+print(f"Setting {item} as reviewed.")
+item.review()