I HAVE BOUGHT THESE ITEMS THAT'S HOW I KNOW SO. The labels on them are quite clear also;
Cosmic's Cyclone Wheel 3 Pack DOES have a Cat3 25m rating on the pack header and wheels,
BUT in their selection boxes they DO HAVE a Cat2 5m rating on their label.
Britannia's Triangle Wheels in their 3 garden fireworks selection boxes DO in fact have a Cat2 5m label on them,
BUT in the Britannia Fireworks Wheel Pack at ?6.49 retail the SAME WHEELS DO have Cat3 25m labels on the pack header AND labels.
If you ignored the 25m distance for the Cat3 versions of these wheels, your house would NOT burn down at all despite the warning that SPECTATORS MUST BE AT LEAST 25 METRES AWAY, but you'd be well advised to stand as far back as you can even if not 25m from them.
Tell sizzle too and answer his replies as well. 
Anthony ? did you read my answer? ? I am not asking if you bought the items, I asked if you hold the regulations explaining how cat 2 and cat 3 are being decided.
I?ll try again.
Case1:
Chinese Company x (whose name I will not mention) have created a wheel, with the formulation x kno3, y sulphur, z charcoal, p titanium. It burned very nicely, and measured to have a ring of fire that can measure from side to side 3 meters. Taking into effect the flying sparks and wind, they decided it might fall outside the 5 meter area, so they classified it at class 3.
UK Company calls them and say they would like some Cat 2 selection boxes, containing similar effect, so they go with x-5 kno3, y sulphur, z charcoal+5, p titanium. This slows the wheel down, not much, bring the ring of fire to 2.6, but it still looks very similar, and they have plenty of fancy wrappers available, so they put the same name, still ? this time it?s class 2.
Case 2: A factory makes cake for professional shows. The explosive power classifies it as 1.3 ? but they don?t do any additional safety checks as they want to keep the development price low (after all, importers except a cheap price). They just put a small label ?Blossom and Thunder? and export it as class four. Suddenly, USA firm want this as a consumer firework. They are willing to pay more, so the Chinese company run some test, and discover that it can be classified as class three. Grand, every batch that goes through a test has a wrapping and warning stickers classifying it as class three, while those who are not test are sold cheaper to the professional as class four items. Same production line, same effects, still different classification?
IT?S NOT THE NAME OR THE EFFECT THAT CLASSES THE FIREWORK ? IT?S HOW IT BEEN TESTED, PACKED, LABELED OR ANYTHING ELSE THAT IS REQUIRED BY LAW.
The reason I?m making this remarks for you is because you persistently paint a picture of unreasonable and illogical classification of fireworks and their effect based on what you SEE rather then what you KNOW.
Now, based on what you SEE, you can say that this firework LOOKS weak and should require a 5-meter distance, but it is based on what you KNOW that classifications are being made.
Based on what you KNOW, you can challenge whether the regulations are justified and whether certain fireworks should be exempts and reclassified. Based on what you SEE ? you can just give your impression of the firework ? not the regulations behind it.
How many shops/garden centres and supermarkets give adequate advice to the customer when they are buying fireworks about safety distances required for garden and display fireworks? Answer;very few! Some when you ask say I don't know and scratched heads, then as a result you may get served with Cat3 25m display fireworks when you only have a small to medium garden with less than 25m spectator distance!!! The danger of that is
