Immigration Act 2009, s 129; United Nations Convention Relating to the Status of Refugees 1951, Article 1
You will be recognised as a refugee if:
you’re outside your country of nationality or habitual residence because you have a well-founded fear of being persecuted because of your race, religion, nationality, social group or political opinion, and
you’re unable, or because of that fear, unwilling, to return to that country.