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Yorkshire-based supermarket Morrisons promises action over milk prices

Milk farmers say an industry crisis has driven them to extreme measures - from emptying supermarket shelves of milk, to leading cattle through the grocery aisles. But has there been a breakthrough in the relationship between retailers - and the farmers who claim they're being treated unfairly? Today, talks led to Yorkshire-based supermarket Morrisons promising to take action - as Helen Steel reports.