You can clean [roller blinds](https://www.homebase.co.uk/storage\\-home/home\\-furnishings/blinds/roller\\-blinds.list) without removing them from their brackets by using a soapy cloth or vacuum cleaner. It's important to be careful with the cleaning products you use, depending on the fabric of your roller blinds, though soapy water is usually a safe option.
If you are unsure, check the washing instructions that come with your window blinds.