Today I was called to a property where a family member had locked the door and put the chubb (mortice) lock keys through the letter  not knowing no one else had that key to get in. The owner had tried her best to hook the keys through the letter box before she called me. I arrived on site within  30 minutes of the call managed to pick the mortice lock open within 10 minutes keeping the cost to the customer down as there was no drilling and replacing the lock and the customer was able to carry on with the rest of her evening