Yeah we have smoke/fire alarms. Never really thought about the risk of running the tumble drier at night. We used to put it on and leave the house when we used it during the day.
A washer / drier running overnight is essentially what triggered the Grenfell fires. My Grandfather was a fireman too, so I was brought up that we never run electrical appliances unattended overnight.
Faulty appliances are the leading cause of house fires:
https://electricalcontractingnews.c...se-43-fires-a-week-in-england-research-finds/