| Cover | Jan. 27, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 27, 2022 |
| Entity File Number | 000-56036 |
| Entity Registrant Name | SmartKem, Inc. |
| Entity Central Index Key | 0001817760 |
| Entity Tax Identification Number | 85-1083654 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | Manchester Technology Center, Hexagon Tower |
| Entity Address, Address Line Two | Delaunays Road |
| Entity Address, Address Line Three | Blackley |
| Entity Address, City or Town | Manchester |
| Entity Address, Country | GB |
| Entity Address, Postal Zip Code | M9 8GQ |
| City Area Code | 011-44-161 |
| Local Phone Number | 721-1514 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
