have you measured it with a smart plug ? I did this for washing machine to check; it's all like average mileage scams on cars.
Today I had a small leak behind the washing machine, so as I had to pull both machines out to fix it and it's wash day I checked the power usage with the smart plug.
The washing machine which was a long 40c 3h+ wash. Most of my washes tend to be half that time (time automaticity reduces), but I put in the wet towels I was moping up the leak with.
This used 1.18 kWh, so I normal 40c 1h 20+ wash would be around half that.
For the tumble drier a 65 min synthetic storage cycle used 1.57 kWh. Less wet loads (ones without towels in) can be a bit quicker, as it stops early when its dried out.
So for me that's about 20p for a heavy load.