About 20 weddings involving African nationals seeking British residency rights are being investigated.

BBC: Sham marriage raids: Ten people arrested

In 1858, the Treaty of Edo was signed which provided for the opening up of Japan to British trade and set up British residency.

CNN: Wednesday,

Her reception was a thank you for heading a campaign that persuaded the British government to change its mind and allow United Kingdom residency to Nepali Gurkhas who had served in the British army but had retired before 1997.

ECONOMIST: Gurkhas in Nepal

It points out that British tax exiles do not have to keep a record of days of arrival and departure to establish their residency abroad.

ECONOMIST: Devolution and taxes