Taking kratom out of United Kingdom
Kratom cannot lawfully be taken out of the United Kingdom — the Psychoactive Substances Act 2016 makes exporting and supplying it an offence, though simple possession is not criminal.
Details
The UK controls kratom (Mitragyna speciosa) under the Psychoactive Substances Act 2016: producing, supplying, importing, and EXPORTING a psychoactive substance are offences, while simple personal possession (outside custodial settings) is not. Taking kratom out of the country is therefore itself the offence — kratom found at departure screening is seized and the traveller risks prosecution for export. Most destination jurisdictions also control kratom; do not carry it across any border without verifying both sides.
Quantity limits
Zero — export is an offence under the Psychoactive Substances Act 2016
The other direction
Bringing kratom into United Kingdom(prohibited)