style="overflow: hidden; color: #000000; background-color: #ffffff; text-align: left; text-decoration: none; border: medium none;">When Britons use the word “oligarch” these days, we think of the caste of knuckle-cracking hard-nosed entrepreneurs that rose to wealth and power after the break-up of the Soviet Union: super-rich, politically potent, scary – and deeply un-British.