Added UK emergency number

app.py

@@ -607,7 +607,7 @@ def process_turn(
     if high_risk:
         closing = (
             "I’m concerned about your safety based on what you shared. "
-            "If you are in danger or need immediate help, please call 988 in the U.S. or your local emergency number. "
+            "If you are in danger or need immediate help, please call 116 123 in the UK, 988 in the U.S. or your local emergency number. "
             "I'll end the assessment now and display emergency resources."
         )
         chat_history[-1] = (chat_history[-1][0], closing)