Unfortunately, due to the paperwork and permits that are required when importing or exporting seahorses these days, Ocean Rider only ships their livestock within the continental United States, so you’ll have to obtain your domesticated seahorses elsewhere.
However, I know exactly who you should contact on your side of the pond to find a reliable source for captive-bred-and-raised seahorses — Neil Garrick-Maidment. He is the Director of the Seahorse Trust in the UK, a very accomplished breeder of numerous seahorse species, and the author of both Seahorses: Conservation & Care and the Practical Fish-Keeper’s Guide to Seahorses. If you contact me off list, I will be happy to provide you with Neil’s e-mail address. You can reach me at [email protected] any time.
Best wishes with all your fishes, umzo!