LONDON—An influential group of British lawmakers criticized the U.K. government for not doing enough to clamp down on illicit Russian money Monday, as it emerged that a prominent oligarch hadn’t been able to enter Britain in recent weeks because of a delay in his visa renewal.
“The use of London as a base for the corrupt assets of Kremlin-connected individuals is now clearly linked to a wider Russian strategy and has implications for our national security: combating it should be a major U.K. foreign policy priority,” said...