North Korea is accused of using a house in Blackheath to help fund its nuclear weapons programme.

The property in Kidbrooke Park Road is registered to the rogue state’s insurance firm, a Sunday Times investigation discovered.

Korea National Insurance Corporation (KNIC) had operated in the UK for more than two decades without being challenged before being sanctioned by the EU last year.

It had started trading on January 1, 1996, according to its listing on Companies House, but has now closed.

An EU sanction against the Blackheath-based insurers last year described KNIC as “a government entity… generating substantial foreign exchange revenue which is used to support the regime in North Korea.

“Those resources could contribute to the DPRK's nuclear-related, ballistic missile-related or other weapons of mass destruction-related programmes.

“Furthermore, the KNIC headquarters Pyongyang is linked to Office 39 of the Korean Worker's Party, a designated entity.”

The Treasury has now frozen the KNIC’s UK assets, including the Blackheath house, which cannot be sold without the government’s permission, The Times reported.

The North Korean embassy in London described the allegations as “groundless”.