Not alone there. This happened in Forest Hill.
Last week my son answered the door to three teenagers who asked if they could use the phone. He was put off by their general attitude, refused and closed the door. They then kicked the door open (breaking the frame and yale lock) entered the house and proceeded to steal two pushbikes from the hallway. Luckily the police arrested them a little later (just past the Horniman and about half a mile from our house) but they were released on bail that day.
Beware if anyone rings on the doorbell and asks to use the phone.