Is it legal to have a bonfire night party in your own garden during the COVID pandemic?
Yes. It is perfectly legal . But you must follow the restrictions that apply in your area.
If you are in a Tier 1 or Tier 2 area you can have up to 6 people in your garden (including members of other households).
If you are in a Tier 3 area you cannot have anyone from outside of your household in your garden. But of course your neighbours can watch your fireworks from their own gardens. And you can even have a neighbourhood display as long as you all stay in your own gardens. Sounds quite fun, come to think of it!