Almost everything in the UK is ce marked from fridges to hoovers to fireworks.It won't be a case of the EU just telling us we can no longer use it as it would cost billions not just to the UK but to other foreign manufacturers to retest everything to a different standard.Most likely the ce mark will just be copied over and given a different name and eventually certain items will start to differ slightly because we'll be able to use our own safety standards but that likely won't be for at least a couple of years.CE fireworks won't change before 2021 at the earliest in my opinion.
Those countries in the EU won't have to change a single thing as those countries still in the EU will essentially stick to it and keep using CE marks as per normal on their product, on the other hand we, the UK,
ARE affected, because we are pulling out of the European Union and as such, have been told as such, that we cannot carry on using the CE mark on UK product after March 29th.
You are right
@Maxywell, there will probably be a transitional period for a new UK mark to be phased in and become permanent, at least over 2-3 years at most, that is
assured, it's not going to just disappear overnight in a flash, as Tommy Cooper would say "just like that!", and yet it remains to be seen what UK manufacturers and importers what they will actually do.
An option would be to stick a UK mark sticker of some sort over the CE mark as this would help somewhat and prevent any discord, alarm, worry and upset amongst UK firework retail product companies and those companies who provide F4 compliant professional fireworks, which are also marked CE, for display companies, that would be an obvious easy way to do it as Krony says, and this would help in the short term until something new comes along which UK firework retail products companies and suppliers to professional display firms can follow and work to.