GBP/USD mounts a tentative rally early Mon, last 1.1890

But bearish bias persists, nearest cap at 1.1905

Ceiling of Bollinger downtrend channel held last week

But stronger top at 23.6% Fibo way above at 1.2205

Unless that barrier is breached, downside favoured

British PM contenders debate tax cuts nL1N2YY0DC

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