You need one for ATVs & SSVs. Here are the facts.
To be allowed to ride SSVs and ATVs in the United Kingdom, you need to be at least 16 years old. Additionally, you need to have a corresponding licence that depends on the technical aspects of your ride of choice.
ATV and SSV licences
There are different requirements to fulfil regarding riding ATVs and SSVs that depend on the vehicle’s use and dimensions.
Motor vehicles with 4 wheels up to 400kg unladen or 550kg if they’re designed for carrying goods.
Category B (car) licence holders automatically have category F entitlement.
Agricultural tractor. You can hold a category F licence from age 16.
16-year-olds may only drive tractors up to 2.45 metres wide, and tow trailers up to 2.45 metres wide and with 2 wheels, or 4 close-coupled wheels.
From age 17 these restrictions do not apply. Category F licence only applies to tractors used primarily for agriculture or forestry.