No. Magic truffles are a Class A drug in the UK, and bringing them across the border is the import of a controlled drug. Under the Customs and Excise Management Act 1979 that carries up to life imprisonment on indictment. It applies to fresh truffles and dried ones, to a few grams left in a pack, and to anything sent by post. The legal position below was checked on legislation.gov.uk and GOV.UK on 17 October 2026.
Why truffles count as Class A
Schedule 2 of the Misuse of Drugs Act 1971 lists the Class A drugs. Two entries matter here: "Psilocin." and, since 18 July 2005, "Fungus (of any kind) which contains psilocin or an ester of psilocin." (Misuse of Drugs Act 1971, Schedule 2). The second entry was added by section 21 of the Drugs Act 2005 to end the old argument about fresh mushrooms.
Truffles are sclerotia, a part of the fungus that grows underground. They contain psilocybin (Pellegrini et al. 2013), which is psilocin with a phosphate group attached, an ester of psilocin in chemical terms (PubChem). The same schedule also covers "any preparation or other product containing" a listed substance, so a tea, a dried truffle or a chocolate made with them is no way round it. The UK government's own travel advice calls truffles "the truffle (sclerotium) form of psychoactive (psilocybin) mushrooms" (FCDO).
The Act applies in England, Wales, Scotland and Northern Ireland (section 40).
Importing is an offence of its own
Section 3 of the Misuse of Drugs Act prohibits the importation and exportation of controlled drugs (section 3). The penalty comes from customs law. Section 170 of the Customs and Excise Management Act 1979 makes it an offence to be "knowingly concerned in any fraudulent evasion or attempt at evasion" of such a prohibition (section 170). For a Class A drug, Schedule 1 of that Act sets the maximum on indictment at "a penalty of any amount, or to imprisonment for life, or to both", and on summary conviction at six months, a fine or both (Schedule 1).
Possession is a separate offence once you are in the UK: up to 7 years in prison, an unlimited fine or both for a Class A drug (GOV.UK, drug penalties). Handing truffles to someone else counts as supply. FRANK, the government's drug advice service, puts it plainly: "Supplying someone else, even your friends, can get you life in prison" (FRANK).
The Psychoactive Substances Act is not the route
Some articles describe truffle imports as an offence under the Psychoactive Substances Act 2016. That Act does not apply to them: its Schedule 1 exempts "Controlled drugs (within the meaning of the Misuse of Drugs Act 1971)" (Schedule 1). Truffles are dealt with under the Misuse of Drugs Act and customs law, which carry the heavier penalties.
Every route home ends at the same border
GOV.UK lists controlled drugs among the goods you cannot bring into the UK, and says such goods are "seized by customs" (banned and restricted goods). Border Force carries out "immigration and customs controls for people and goods entering the UK" (Border Force), whether you arrive by air, by rail or by ferry.
- By air. The FCDO notes that Dutch airports have "excellent technology and security for detecting illegal items", used also for the baggage of transiting passengers.
- By rail or road. Eurostar trains and cars to the Channel ports pass through Belgium and France, where Dutch law does not apply.
- By sea. Ferries from Dutch ports land in England, where UK customs law applies from the moment you arrive.
Post and parcels
Avalon does not ship to the UK at all (shipping restrictions). Ordering truffles from any seller to a UK address, or posting leftovers to yourself, is still an import of a Class A drug, with the same customs offence behind it. The shop's terms say that customers are responsible for the legality of what is shipped to them (Avalon terms); for a UK address the answer is already clear.
Leftovers
The simplest plan is to buy only what you will use. Whatever remains on your last day goes in the bin at your Dutch address. Do not hand it to someone else who is travelling to the UK, do not post it and do not pack it "just in case". Check the fridge of a rental flat, coat pockets and wash bags before you leave.
The travel day itself
Keep truffles out of the day you travel. DRUGSinfo says the effects last about 3 to 4 hours and that a user is not yet sober after that time (DRUGSinfo). Airports, stations, passport queues and long drives are hard work with a clear head. A session two days before departure leaves room for a slow day after it, and for clearing out what is left.