Goldman's Marcus jolts British banks out of savings slumber

LONDON (Reuters) - Britain's big banks, long able to shrug off competition from start-ups, have been spooked by an account launched just six weeks ago by Goldman Sachs that pays savers more.One of the banks admitted privately that it has seen a spike in savers switching, while others have launched new accounts or raised rates to try to nip "Marcus" in the bud.British savers have got used to payouts of 1 percent or less thanks to rock-bottom central bank rates, but the launch of Marcus with a..