The minimum legal age for buying adult fireworks in Great Britain, including for Bonfire Night, is 18.
UK fireworks law distinguishes adult fireworks from category F1 fireworks, which are low-hazard items such as sparklers and party poppers. Category F2 and F3 fireworks are intended for outdoor use and may generally be sold only to people aged 18 or over.
This age limit applies to purchasing adult fireworks, not simply attending a public display. Bonfire Night events organised by councils, charities, or professional operators normally have their own safety controls and do not require spectators to buy fireworks.
A common mix-up is confusing the purchase age with the permitted firing times. In Great Britain, fireworks are generally restricted to set evening hours, with a later limit on 5 November itself. Northern Ireland has separate fireworks rules and licensing arrangements.