Expensive London property bought through shell companies in weakly regulated jurisdictions has long been a favourite way to hide ill-gotten wealth for everyone from mobsters to kleptocrats.
A spokesman for the British High Commission said: “Tackling corruption is a UK government priority and we will continue to work constructively with Pakistan on this issue.”
He said Britain has robust laws “for the recovery of illicit assets where there is evidence to do so”.
The meeting also discussed British aid to the country.
Mr Khan’s party back-pedalled on suggestions he would invite foreign dignitaries and international sports stars to his inauguration later this month.
Officials in his Pakistan Tehreek-i-Insaf (PTI) party had earlier in the week met with foreign ministry officials to discuss inviting foreign leaders including Indian Prime Minister Narendra Modi. Invitations to friends from Mr Khan’s cricketing days were also mooted, including Kapil Dev and Sunil Gavaskar.