3.45pm: We are experiencing higher call volumes than usual in London at present, following the incidents today.  We are working closely with the emergency services and will provide any assistance required.

Customers may experience problems in getting through at the first attempt.  However, in these circumstances, we would ask all of our customers in central London to avoid making unnecessary or lengthy phone calls and preferably, send a text message.

All calls made to emergency services (999) will get through.