Add a small amount of liquid laundry detergent (more or less depending on the size of the wash basin and how many clothes you’re washing). Some good detergent options for washing delicates are ...
If your clothes still smell of body odour or other lingering scents after you've washed them, then you might need the help of a £2 product.
If your whites have become stained and grey over time, you don't need to invest in an expensive laundry stain remover or bleach - as you may already have everything you need at home ...