In the UK you can have as many receptacles on a British ring-main as you like, within breaker limits, because every recept has its own 13A or 5A fuse. I've seen houses with 20 in one kitchen alone, singles, doubles, triples, quads all strung to a 25A breaker! Modern use means that few recepts ever draw more than a few amps consecutive, most less than an amp @ 230v for the phones, wall warts, computers, gizmos etc.. The most power my son in England ever draws is 4A for the vacuum.
