That B&Q 1000mm base units aren't 1000 long. I'd have assumed they were about 999, or maybe exactly 1000. Nope, they are 1003.5mm long. Guess how long a space I'd left for the two 1000mm units in my workshop - correct, it wasn't 2007, it was 2005. Spent hours with a variety of interesting tools hacking 3mm or so off the side of the very substantial wooden stand I'd built for my milling machine. B&Q, you are bastards...