Just found an address with a bit of trial and error from free previews.
Use the person search to find the person of interest and narrow own to one hit using the other fields. Then I put *road, *street, *lane, *avenue etc to narrow down the list of streets in the particular borough.
Then I opened a second browser window with address search. Once I had a hit on whether it was *street,*road etc. I tried to narrow down first part starting with vowels e.g *a*street, *e*street etc.
Each time I got a hit, I would mirror it on address search and narrow down my potential street list. Then try the first letter e.g A*e*street, B*e*street. The mirror list of streets will tell you if some letters aren't worth trying. Although it sounds a long process, I have found two addresses so far quite quickly. Once I'm at street level, I used Dawn's tip to match up the reference number by hovering mouse over preview button and then I get house number.
(Laptop running Windows 10)