The sale of cut flowers in the UK is at an all time high, but cheaper land and labour costs and a warmer climate have led to overseas competitors dominating 85 per cent of the market. Presenter Sarah Raven visits the UK's most beautiful cutting gardens, where British growers are cutting their own niche in an ever expanding market, and tries to encourage the cut flower market and its consumers to celebrate our native seasonal flowers with a Great British Cut Flower Week.