One in 10 young British Asians believes so-called honour killings can be justified, according to a poll for the BBC's Asian Network.

In one recent case, two men were jailed for life for murdering their relative after she fell in love with an asylum seeker.

Greengrocer Azhar Nazir, 30, and his cousin Imran Mohammed, 17, stabbed Nazir's sister Samaira 18 times at the family home in Southall in April 2005.

The 25-year-old recruitment consultant was killed after she asked to marry an Afghan man - instead of marrying someone in the Pakistani family circle.