Merging lenders OneSavings and Charter slide on Brexit and margin pressure

(Reuters) - Growing loan books at British mortage lenders OneSavings and Charter Court Financial failed to shake off Brexit uncertainty and margin pressure as shares in the merging lenders slid by more than 6% on WednesdayBoth reported bigger loan books for the first half, but shrinking net interest margins and a warning of Brexit impact on the housing market weighed on their shares ahead of a 1.5 billion pound merger aimed at bolstering their defences as Britain prepares to leave the European..