The club marked its 80th anniversary by demonstrating the evolution of agricultural engineering with a Grand Ring parade of machinery spanning the last eight decades - including tractors and a combine harvester from the 1940s.

Its stand also illustrated the huge contrast by displaying a 1940s Fordson Major tractor alongside a huge modern John Deere 8RX.

Normac vice chairman Jim Bailey said the club has also evolved since its formation in 1946.

"Initially it was all about increasing productivity after the Second World War," he said. "As we changed from the horse to the tractor, Normac was originally set up by a few prominent Norfolk farmers as an........

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