Thank you for your question
My name is ***** ***** I shall do my best to help you although I fear that the position is not good.
You need have no concern about the immigration issue - you would be able to apply for the child to come here as your dependant without difficulty
Unfortunately the issue of who the child should live with would have to be dealt with under the law is Sierra Leone and there is no assistance that the UK court can giv ein that regard
Please ask if you need further details
It is both.