Foreign Secretary David Lammy ramped up the sanctions this month with a fresh round of curbs against “shadow” oil and liquified natural gas (LNG) tankers. However, UK firms are not banned from transporting Russian gas to other countries around the world.
And its not just the oil that is being loopholed
US companies are getting away with fueling Russia's military by using loopholes
https://counter.social/@ecksmc/111887573055399248
Sanctions mainly hurt the average citizen more than they actually hurt any government
Loopholes keep governments in business
Seapeak Maritime, based on Elliot Street in Glasgow near the Clyde, operates tankers such as the Yakov Gakkel which carries Russian gas from Siberia to Europe and their work is legal and does not breach any sanctions. Critics want the UK Government to close this loophole
https://www.thenational.scot/news/24681571.calls-ban-glasgow-shipping-firm-exporting-russian-gas/