I did a quick count around our flat, and we have the following :
|Room||Outlets||Things plugged in|
|Second bedroom (computer room, really)||6||7|
The lounge has 3 4-outlet powerboards, plus a 5-outlet board with Australian outlets rather than UK ones, for some "legacy" items we brought over. There are also some double- and triple-adaptors. It's a wonder the whole place hasn't gone up in smoke.
The computer room is fairly restrained, for us. This is possibly because the printer and scanner are still in the lounge (printer is there because the router is there, and the router is there because that's the only place it can connect to the cable outlet; scanner is there because there's no useful flat surface in the computer room for it yet), and rwrylsin's Mac only needs one powerpoint (her laptop needs another for its charger).
Oddly, neither the bathroom nor showerroom have any useful outlets (the showerroom has a two-pin shaver outlet, but my shaver has a standard Australian plug, and I haven't seen an adaptor that goes to two-pin from Aus. plug.). I can't recall the last time I saw an Australian bathroom without a normal power outlet. I assume there's some UK (or EU) regulation which says "you can't have a proper outlet in a bathroom ('cos you might do something stupid and electrocute yourself)", but it still seems odd.