If you want a primer on immigration law in the context of bears from Darkest Peru, then this is the thing for you. For example:
"Paddington’s mastery of the English language weighs in his favour. His lack of apparent financial independence and his unlawful immigration status weigh against him, and his private and family life would be given reduced weight because it was established at a time when his status was precarious (see section 19 of the Immigration Act 2014). Judges will recognise that family life can, exceptionally, extend to informal adoptions and that private life amounts to more than a mere period of residence, but I would nevertheless assess Paddington’s prospects of success before an immigration judge as virtually zero."