How does everyone dry laundry in winter?

My laundry is taking SO long to dry. I was about to commit to a dehumidifier, until I read that they're only really effective in temperatures about 16 degrees or so.

I rarely put my heating on - I work in the office every day, always do some kind of social/sport activity in the evenings, so I'm in the house for so little time it seems pointless - plus I love sleeping in a cold room.

The temperature is usually around 10 degrees, so I don't think a normal dehumidifier would be effective. I've heard about desiccant dehumidifiers, but they're a lot more expensive and more expensive to run.

I keep all my windows on the latch constantly but can't open them fully due to rarely being home and, well, I live in London.

Are there any other options for helping laundry dry in cold rooms? I actively like my house to be chilly, so don't really want to have to put the heat on