Energy Saving

I've just loaded the washing machine -using the "quick wash" option. It cuts the wash time by about 20 minutes. To my embarrassment, it was years before I realised what this button did (cuts out a wash & rinse cycle) - so less energy and less water.
I only use the washing machine when the weather looks like it will stay sunny and breezy for the day so that it can line dry. Anything that hasn't dried completely before dusk is moved into the log store (an old car port) to finish off.
I used to have a tumble drier that stood idly in the kitchen for years. When the kitchen was remodelled, I threw it in the skip. The timer was dodgy and it needed repair so didn't want to gift it.

Taking this one step further, I used to wash almost everything at 40C Synthetic and the wash cycle took about 40 minutes with "quick wash". Recently, I've been washing stuff at 30C with "quick wash" and it only takes 20 minutes. Still gets the mud off my clothes.
In OZ they had Cold wash detergents and most washing machines didn't have the option to heat the water.  
My previous washing machine was a hot and cold fill which also seems more sensible to me than having a heating element in a WM. I have plenty of hot water in the hot water cylinder and would rather use that than have a machine that starts from cold every time.

EDIT The Duckduck found this https://www.ariel.co.uk/en-gb/how-to-was...wash-guide
May try 20C next wash.