Hi Bryony,
The World Health Organisation recommends introducing solids at the age of 6 months. However, in many developed countries, parents will introduce anywhere from 4 months onwards. It's recommended not to introduce solids before the age of 4 months as babies won't have the ability to swallow properly.
Even after 6 months, breast milk continues to be a very important nutrional role.
Many parents start with a simple puree of sweet fruit or vegetables like carrots or pears. However, if you want to try baby led weaning, you can try some simple finger foods.
Easy First Finger Foods
There are a number of signs to look for when you're thinking about introducing solids. Most importantly the child should be able to hold their head up. Other signs include taking an interest in food and not continually spitting it out when you give it to them.