Hi, I'm looking to have my old Wylex (rewire-able fuses) consumer unit replaced. It sits on the wall in the lounge next to the fuse unit for my economy 7 night store heaters. My question is as some of the new consumer units are made to look more inconspicuous with solid plastic doors. Would it be acceptable to replace both the old cu and night store fuse unit with one large box that has enough module space to do both jobs i.e. 2 DP switches + all the mcbs/rcd? Can you get a box with sufficient neutral rails? Thanks