If you actually dealt with the regulations rather than read about them on the front page of a comic, you'd know that CE marking simply declares that you have met all the applicable safety standards that apply within all the countries in Europe. This is actually a Good Thing:
Whether you talking about US, Canada, EU, Scandinavia, Korea, Japan, Australia or wherever, you are legally obliged to obtain any applicable safety certification before you may sell your products in that country. I know, because I've spent the last 30 years doing just that. Before the CE mark, it was necessary to get products approved in each of the EU member countries you wanted to sell in (UK, Germany etc etc ….). Now, one mark does it all (within EU) and the standards within Europe have been "harmonised" to cut down on the regulatory work. Doesn't play well with the EU bashers though, who like to present it as the exact opposite. Of course, you still need to have your products approved for all the other markets that aren't harmonised. It's expensive and time consuming and is far from just a formality, as you often have to make late changes to the product to comply.
Unless we plan to completely stop selling products to Europe, we will still need to CE mark.And even if we get rid of the CE mark within the UK, any standards that replace it will be almost indistinguishable. Over the years, harmonisation has been a global process so that the requirements for the N American and European markets have converged. It's sensible really, as the requirements are based on decades of knowledge and experience, often based on actual death and injury.So for instance, the global generic electrical safety standard is arguably EN 60950 / BS EN 60950 / UL60950 / CSA 22 etc etc. Call it what you will but it's all based on IEC 60950 which has much of its roots in our old BS stds.
The IEC that sets these standards was originally formed in the UK to coordinate international safety standards. Nothing to do with the EU, I'm afraid.
Murray