The UK will impose sanctions on 370 more Russians, following the passage of the Economic Crime Act this week.
The list will include more than 50 oligarchs and their families with a combined net worth of £100bn.
Sanctions on the individuals will also apply to family members, the Foreign Office said, though there has been no further clarification of how that will be defined.
However, parliament’s Intelligence and Security Committee suggested on Tuesday that it was only a “first step” towards giving the authorities the “necessary clout and greater powers to ensure the UK is no longer a safe haven for the oligarchy and their enablers”.
It highlighted its Russia report sent to the prime minister “together with a detailed classified annex” two years ago with a set of recommendations about how to disrupt illicit money from Russia.