The sunshine is warm, but the air’s cold today. Fortunately, the outdoor tea area at Benthall Hall is sheltered from the breeze, so we’ll enjoy our al fresco refreshments without a shiver. The bluebell season is just beginning, the chestnut leaves are emerging (they remind me of pale green cormorants drying their wings) and the oilseed rape is brightening the fields – sunshine even when the sun’s gone in…