A man convicted of plotting an attack on the London Stock Exchange in 2012 has been allowed to remain in the United Kingdom on human rights grounds, despite his asylum claim being rejected. Shah Rahman, a Bangladeshi national, pleaded guilty to preparing acts of terrorism and was sentenced to 17 years in prison before being released in 2017 under automatic release provisions.

Although his asylum application was denied under the 1951 Refugee Convention due to his conviction, authorities determined that deporting him to Bangladesh would risk violating his rights under the European Convention on Human Rights. As a result, he was permitted to stay in the country.

In contrast, his wife, Mauritian national Parveen Purbhoo, has been barred from entering the United Kingdom following a security assessment that concluded there was a 'real risk' she could engage in terrorism-related activity. Officials cited suspected support for the Islamic State after numerous related images and videos were found on her phone. Her appeal against the ban, which argued it was improper to consider her husband's conviction, was rejected.