£15 a year - is that all!
That is really good. Yes it's nice to hang clothes outside when the weather is nice but it is a shit when you are at work all day, have hung some washing out in the morning and it starts raining and there is bugger all you can do about it.
I have had some towels out for 3 days now, I keep leaving them to dry and then it rains again. I will have to wash them again. I think that is more a waste of resource (electric & water) than just tumbling them in the first place.
Plus, I have had the jolly experience of a load of spiderlings nesting overnight in a pillowcase (shook it out hwen took the pillowcase off the line and got covered in 'em). And bird shit.
Tumble driers are a great invention.