posted 4 years ago
I'm sure you can still get things posted privately to you but it will not be legal to import/export any seeds either way without a photo-sanitary certificate until some form of equivalence agreement has been arranged (it isn't legal to ship tubers/onions etc without one now). So no company is going to ship in or out without issuing a certificate until it is sorted. I assume it will be sorted quite fast, but to be honest I assumed it would be sorted before it came to this so I am probably wrong, I doubt garden seeds are high up the priority list to be honest. For large commercial it isn't a huge issue the certificates are not that expensive so if one is talking about 100's of kgs of one seed it's not to bad but it's very high for individual seed packets.
EU and therefore UK rules changed a very short time ago, (a year I think?) on imports from outside the block it used to be as Henry says possible with the exception of some seeds (onions were excluded) to import pretty much anything, but right now (Dec 2020)you cannot legally import any seeds or plant material from outside the block, without a certificate. The Ukraine has been trying to get an equivalency certificate for over 10 years now and still hasn't managed it (They export a lot of seed grain)
I got this years seeds through a month ago, but I use some seeds that cannot be found here (old English types) so I have to hope they hurry up and sort it or try to save the seeds I need, from the batches I have now.