Tollywood's latest heartthrob Rakul Preet Singh, had a scary experience in London where she is shooting for upcoming film of Jr NTR under Sukumar's direction. She lost her route in London while she was driving alone and that's a horror for her. "For one sequence, I was supposed to drive a car around the streets of London alone, while a camera rig is fixed to my car. I had to go straight on a particular street, turn left and then take a U-turn to come back to the location but I missed that route. I didn't even have my cell phone. The walkie talkie I was carrying lost signal. I started screaming for help literally. But I didn't remember any of my crew member's contact numbers either. It was horrifying", said Rakul Preet.An hour later her walkie-talkie sprang back to life and crew members have reached her.