Roxanne I am english and living in denmark. Me and my DH are both going to talk to our daughter in english and she will pick up danish everywhere else. If we were living in England though my DH would have spoken only danish to her otherwise she wouldn't be able to speak with her danish family.
Does your DH speak maltese? The reason we can do this is because my DH has very good english and it comes as natural for him to speak english as it does danish.
There is a very good book called "growing up with two languages" that gives examples, advice and case studies. I can give you the details if you want, they sell it on amazon.
I think it is a great start in life to grow up with two languages