Won't pass credit check

Due to a separation from my wife I need to find a 2 or 3 bed flat to rent. My issue is that I won’t pass a credit check due to adverse credit (no CCJ’S or anything major). I have been happily paying rent to my wifes father for the past 17 years with none missed and no late payments. He is more than willing to provide a reference for this. Could this help me?