Some firework companies (including Peak Fireworks) are open all year round. Even when the office is shut you can leave us a message and we will get back to you as soon as we can.
But the traditional times for fireworks in the UK are Bonfire Night (November the 5th) and New Year’s Eve (December 31st). You may also want some for the movable festivals at Chinese New Year and Divali. So you will find other shops that open just for these periods. They have to buy a licence from their Local Authority, which will allow them to sell fireworks between:-
October 15th and November 10th
and 26th December to 31st December.
3 days before Chinese New Year and Divali.
If you have trouble finding a shop in your local area, try to find someone selling on line. But remember they will not be able to send fireworks to you by ordinary post, and it is very expensive to send them by courier. So you will always be better off finding a local supplier. The best search term to use in Google is “Fireworks near me”.