I have an Ever Ready torch which is my main torch at home. I got it when I was 10 for a week long stay at Carey Camp, Dorset Schools' camp near Wareham.
That makes it 34 years old . In fact I must have received it almost exactly 34 years ago to the day, an early birthday present, cos we came back from camp on my birthday on a blazing hot June day in '76.
It's never needed a new bulb - it really is ever-ready!