Fishing License for 13-Year-Olds in the UK: What You Need to Know
You need a rod licence to fish for salmon, trout, freshwater fish, eels or smelt in England and Wales, so the age at which children need a rod licence is at their discretion - some 12-year-olds will likely need one, but not all of them. Children under 16 do not need a licence (in most areas)**