Tara - some legislation does exist, category 4 fireworks are restricted to 'professional' buyers only. And fireworks are tested to see which category they fall to.
Category 1 ("indoor") fireworks are for use in extremely restricted areas.
Category 2 ("garden") fireworks must be safely viewable from 5 metres away, and must scatter no debris beyond a 3-metre range.
Category 3 ("display") fireworks must be safely viewable from 25 metres away, and must scatter no debris beyond a 20-metre range.
Under BS14035, there are also now Category 2 fireworks that require a longer distance of 8 metres, providing potentially better effects than 5 metre fireworks but without the fallout of Category 3 fireworks.
Fireworks of louder than 120dBA at 15 metres cannot be sold to the public.[3]
It is not illegal for a firework to be set off at less than the minimum safely viewable distance; however, in the event of any injury to a spectator, the firer might be liable if the distance was too short.
A Category 3 firework will contain no more than 1 kg net explosive content in the case of combinations and fountains, except for fountain combinations, which can contain up to 3 kg of net explosive content.[4]
Professional fireworks Edit
Category 4 ("professional") fireworks are for sale only to fireworks professionals.[5] They have no restrictions, and this is the default category for any firework which has not been tested to confirm that it should be in one of the lower categories.
The law considers a firework professional to be someone employed in a business that fires fireworks, such as a firework display outlet, or a stagehand. In practice, most stores [according to whom?] that sell Category 4 fireworks do ask for proof of training; most [according to whom?] category 4 professionals are trained under the British Pyrotechnists Association Professional Firers Training Scheme,[6] although equally legitimate professional competency courses, recognised under current legislation, are provided by some commercial organisations such as Illuminate Consult.[7] Company directors are liable under the Health and Safety at Work Act for the safety of their employees, and prosecutions have occurred.[8]
The main issue for me here are the category 3 fireworks being available to buy in shops with no restrictions. If they were licenced then IMO it'd make a difference to the potential for injury, the noise and the risks from falling debris.