On December 31st, 2020, at 23:00, over 66,000,000 people lost access to registering domains under ccTLDs like .eu, .fr, pm, .it, and many others. This is because the UK left the EU transition period, and, in-turn, access to many European countries domains, and the EU’s .eu domain.
Whilst this is all gloomy, especially for those of us that rely on a European domain (eml.pm for me), there is a solution: domain proxies. A proxy service, usually for a fee, essentially registers a domain on the behalf of an individual/institution from a country where the domain is able to be registered, and allows you full control over it.
You should check the situation with the domain you have by contacting the country that runs the ccTLD you own (you can find these by looking at the article for your ccTLD on Wikipedia).
Do note that some countries are continuing to allow registrations and renewals from Brits, others are only allowing renewals, and others are deleting Brit’s domains (namely .eu). It all depends on what domain you have; so do some research.
In my case, my domain is a French one, meaning AFNIC control it. AFNIC have said that they will not delete any domains registered by Britons before the end of the transition period (31/12/2020), however, when I emailed them, they said I would not be able to renew my domain after it expires in 2022.
So my plan is to, a few months before it expires, move the domain to INWX, a German domain registrar. INWX offer a domain proxy service for several European domain at a reasonable price – just €2.50/year for .pm, compared to around €40/year with 101Domains.
In summary, if you want a European domain post-Brexit, a domain proxy is often your best choice.