British student Stacey Gough and her Japanese boyfriend, Yoshihiro Ki, have decided to marry and get a spouse visa in Japan because they say the income requirement for having foreign partners is less stringent than in Britain.

"Why is it moral to tear people apart based on income?" asked Gough, 24, lamenting the hardship facing international couples seeking to live together in Britain.

New regulations are making it virtually impossible for some British citizens to obtain visas for their foreign partners to live and work in the country, campaigners say.