Most people getting into invertebrate keeping do not think about the legal side until they try to buy something and find out it requires paperwork. Or worse, until someone on a Facebook group tells them a species is illegal and they panic. The actual legal situation in the UK is more straightforward than the rumour mill suggests, but it does matter, and getting it wrong can mean confiscation of animals and fines.
What CITES is
CITES stands for the Convention on International Trade in Endangered Species of Wild Fauna and Flora. It is an international agreement between governments that regulates cross-border trade in species that are or could be threatened by commercial exploitation. The UK implements CITES through domestic legislation, currently under the retained EU Wildlife Trade Regulations post-Brexit.
CITES works through a system of appendices. Appendix I species are the most restricted: commercial trade is generally prohibited. Appendix II species can be traded commercially but require export permits from the country of origin, proving the trade is not detrimental to wild populations. Appendix III species are protected in at least one country that has asked other CITES parties to help control the trade.
Which invertebrates are CITES-listed
Fewer than you might think. The majority of invertebrates commonly kept in the UK hobby are not CITES-listed at all. Most isopods, beetles, mantids, millipedes, and jumping spiders are unlisted and can be bred, sold, and bought without any CITES paperwork.
The main groups where CITES does apply to invertebrates are certain tarantulas (several Brachypelma and Tliltocatl species are Appendix II), some beetles (a handful of stag beetle and scarab species), and certain butterflies and moths. Queen Alexandra's birdwing butterfly (Ornithoptera alexandrae) is Appendix I, meaning commercial trade is essentially banned. A few scorpion species are also listed, though this is less relevant to the UK hobby.
If you are buying captive-bred invertebrates from a UK breeder, CITES is unlikely to be relevant for most species. Where it becomes important is importing animals from outside the UK or buying species that were originally wild-caught from countries that list them.
Post-Brexit import rules
Since leaving the EU, the UK is treated as a third country for CITES purposes. That means importing CITES-listed species from EU countries now requires the same permits as importing from anywhere else. Before Brexit, trade within the EU was simpler. Now you need an export permit from the sending country and an import permit from APHA (the Animal and Plant Health Agency) in the UK.
For non-CITES species, import rules still apply but are less restrictive. You still need to comply with any phytosanitary or animal health regulations. Importing live invertebrates into the UK from outside Great Britain requires checking whether the species is on any restricted list and whether an import licence is needed. The rules differ between Great Britain and Northern Ireland due to the Windsor Framework, which keeps Northern Ireland aligned with EU regulations for some trade purposes.
Domestic law beyond CITES
CITES covers international trade, but UK domestic law has its own protections. The Wildlife and Countryside Act 1981 protects certain native species from collection. Some UK invertebrates have legal protections. The stag beetle (Lucanus cervus), for example, is protected from sale under the Wildlife and Countryside Act 1981, though collection for personal keeping is not prohibited in the same way. Always check current regulations before collecting any wild invertebrate.
The Dangerous Wild Animals Act 1976 does not generally apply to invertebrates, though there have been occasional discussions about whether certain venomous species should be included. Currently, you do not need a DWA licence for any commonly kept invertebrate in the UK.
Local council regulations can also apply if you are breeding and selling animals commercially. Depending on the scale of your operation and your local authority, you might need a pet shop licence or a breeding licence. The threshold for what counts as "commercial" varies, and it is worth checking with your local council if you are selling regularly.
Practical advice
For most hobbyist keepers in the UK buying from UK breeders, the legal requirements are minimal. You do not need a licence to keep isopods, jumping spiders, mantids, millipedes, or the vast majority of beetles. If you are buying captive-bred animals from someone in the UK, no CITES paperwork is involved for unlisted species.
Where to be careful: if you are buying from overseas, particularly from non-EU countries, check the CITES listing for that species before you order. The CITES species database (speciesplus.net) is the official reference. If a species is listed, make sure the seller can provide the correct export permits. Without them, the animals will be confiscated at the border and you may face prosecution.
If you are unsure about a specific species, APHA can advise. The CITES section at APHA handles enquiries from private keepers as well as commercial operators. Better to ask before buying than to find out afterwards.
Keep records. Even for unlisted species, having a record of where you bought your animals, when, and from whom is good practice. If you breed and sell, records of lineage and sales help demonstrate that your stock is captive-bred, which matters both legally and for buyer confidence.