The CE marking on fireworks came into effect as of 4th July 2010 under the Pyrotechnics Articles Safety Regulations 2010, and this meant that all new fireworks that were to be imported and created for sale in the European market after this date must be marked with the CE standard. However from the 4th July 2010 there was a transitional period where the previously marked BS7114 fireworks still could be sold and used up until 3rd July 2017. This transitional period was to help the old BS7114 marked fireworks to be filtered out of the market over this 7 year period.
After this transitional period, from the 4th July 2017 it is illegal for any retailer, wholesaler and distributor of fireworks to sell any firework marked with the old BS7114 mark as they no longer conform to the Pyrotechnics Articles Safety Regulations.