The UK has been criticised for not doing enough to clamp down on oligarchs' ill-gotten gains which are frequently invested in luxury real estate in London, a popular destination.

Amendments will be introduced to the Economic Crimes bill, which the government now wants to be passed by the lower House of Commons on Monday, "to crack down on corrupt elites and ramp up pressure on (President Vladimir) Putin's regime", a statement said.

The amendments will "allow us to move harder and faster" with sanctions, Economic Secretary to the Treasury John Glen said on Saturday.

"What we're trying to do is make it more straightforward to get a legal basis to move on these individuals. We believe that these changes will make that difference," Glen told BBC radio.

"In this situation, we need to look at how we can expedite these decisions more swiftly."

The amendments "will allow the UK to align more rapidly with the individual designations imposed by our allies such as the US, Canada and the EU via an urgent designation procedure," the government said after criticism that sanctions lists were not always aligned.

They will also reduce the deadline for foreign companies to register their beneficial owners from 18 months to six months, to "help crack down on money laundering through UK property."

The government said the bill would be "expedited" through the Commons on Monday with a view to it becoming law "as soon as possible".

The UK has already passed a swathe of sanctions against Russian oligarchs, banks and businesses, as well as banning Russian aircraft and vessels over Moscow's devastating invasion of Ukraine.