Boris and Arkady Rotenberg

THESE brothers, members of Russia’s richest family, are childhood friends of Putin.

They are both subject to UK sanctions but much of the luxury property here linked to their family is believed to have been bought by offshore trusts.

Arkady, who founded the

SMP bank and is

Putin’s judo partner, was first sanctioned by the UK over links to a PR campaign allegedly designed to brainwash children in annexed Crimea into thinking they were Russian. The 70-year-old tycoon is believed to be involved in a court battle over the £30million Surrey mansion where ex-wife Natalia, 41, lives.

Arkady’s son Igor has also been sanctioned in the UK for “close familial ties” to Putin, but his other adult children Pavel and Liliya are not on the list. Younger brother Boris, 65, was sanctioned in the UK last month. US authorities have also sanctioned his wife Karina and sons Roman and Boris but none of the family have faced similar measures in the UK.

Roman, 40, has British citizenship and lives in a London home worth around £8million.