Firework displays should be enjoyable and spectacular occasions – but they obviously need some responsible planning. The good news is that there is straightforward guidance to help you.
If you are organising a major public event, you will clearly need a robust and detailed approach to planning as well as professional involvement. If you are holding a local firework display, such as those organised by many sports clubs, schools or parish councils, you still need to plan responsibly, but the same level of detail is not necessary or expected.
Here are some tips and guidance to help you: http://www.hse.gov.uk/explosives/fireworks/using.htm