GeoSignal analysis

Key assessment

The designation closes a remaining gap in UK sanctions coverage of Russia’s major oil producers, according to the government’s count.

Its practical effect depends on the extent of the companies’ UK-linked assets and services and on compliance with the restrictions; the supplied evidence does not establish those exposures or a disruption to output. Coverage of the ten producers is therefore a measure of legal reach, not proof of a comparable reduction in Russian oil exports.

Reported developments

What happened

The UK sanctioned Slavneft and Rosneft subsidiary Vostok Oil on 12 November. The government says Slavneft’s designation means all ten of Russia’s major oil producers are now under UK sanctions.

The notice records 20 additions and one variation to the Russia sanctions list. For some specified vessels, UK authorities cited suspected carriage of Russian-origin oil, petroleum products or liquefied natural gas to third countries.

  • The 12 November notice imposes an asset freeze, trust-services and director-disqualification sanctions, and transport sanctions on Slavneft.
  • The 12 November notice says that, where transport sanctions apply to Slavneft, ships it owns, controls, charters or operates are barred from UK ports and may be detained or directed.
  • For Koryak FSU, specified on 12 November, the notice prohibits UK port entry and lists restrictions on chartering, operation and specified services, subject to applicable exceptions and licences.
  • The 12 November notice identifies Novatek as the current owner or operator of Koryak FSU.
  • The 12 November notice says persons who possess or control funds or economic resources of an asset-frozen designated person must freeze and report them, and must not make them available unless an exception or an OFSI licence applies.
  • The 12 November 2026 UK sanctions notice imposes an asset freeze, trust services sanctions, director disqualification and transport sanctions on Slavneft.
  • The 12 November 2026 UK sanctions notice imposes an asset freeze, trust services sanctions, director disqualification and transport sanctions on Rosneft subsidiary Vostok Oil.
  • The 12 November 2026 UK sanctions notice designates coal companies Kuzbassrazrezugol and Siberian Coal Energy Company.
Analysis

Why it matters

The measures create compliance obligations for people holding designated parties’ assets and restrict access to UK ports and services for affected vessels. Oil and coal businesses named in the notice, and counterparties dealing with them, face tighter UK-related constraints. The evidence does not establish a resulting change in Russian production or exports.

Indicators & conditional outlook

What to watch

Key questions

  • Do UK authorities grant licences or issue further guidance materially changing how the new restrictions apply?
  • Is there verified evidence that the designations have changed shipments or production at the affected companies?
Potential consequences

Implications

Economic Pressure

New UK designations tighten asset and services restrictions on Slavneft and Vostok Oil, creating compliance duties for people holding their funds or economic resources.

Trade & Supply Chains

Transport measures restrict UK port access for affected ships and specified vessels, potentially constraining UK-linked shipping arrangements.

Energy

The designations expand UK restrictions on Russian oil and coal businesses, although an effect on production or exports has not been established.

Explore this edition’s wider impacts
Energy Trade & Supply Chains
Trace the reporting

Sources

  2. Sanctions Notice: Russia, 12 November 2026UK Foreign, Commonwealth & Development Office · 12 November 2026