Hi Old Gasman, Alpine, Johnny108. Thanks for the links. That's sorted me out for next years seeds. I'm not sure what to buy yet. Definitely Burley, but I need to read up on different strains. Any recommendations would be welcome. As I'm so new to this, I guess how easy it is to grow in pots and cure would be important. I like a relatively strong smoke so nicotine content would be important as well.
Spain does random checks on anything entering the country from outside the EU. I've paid no tax at all on some things, but paid hefty taxes on others. I build stereo valve (tube) amplifiers as a hobby and can only get the transformers I need from the USA. They are expensive and I had to pay about 20% import tax on them. The tax (if any) on the seeds would be tiny so I'm not worried about that. It's more the chance they'll be confiscated. I'll order soon, that way if there are any problems I'll have time to find a different supplier.
I'll try the UK supplier too.