I have just finished completely renovating a two-bedroomed flat. No alone, but supervising and a lot of finishing work. I had expected to find my Fein Multimaster the greatest help in this task but I am disappointed: so often another tool did it better (jigsaw, delta sander, Dremel-clone, . . .). Especially this last was a revelation. But what you REALLY need is a beefed-up version of the Dremel that could take 6mm (1/4") accessories. So often it was necessary to shave off 1 to 2 mm to make something (like a door) fit. A 6mm "Dremel" with a router bit and a simple fence is the answer, I think. Google "suggested" a die grinder, an edge trimmer like the Trend T4, or a RotoZip (available in Europe? Now, like Dremel, in the Bosch family).
What is the experience/advice of other uk-diy'ers ?