By Tom Kershaw & Paul Greaves Locals living in one of the country’s best seaside villages say the plague of second homeowners is responsible for rocketing house prices. Runswick Bay, known for its stunning picturesque views and peaceful atmosphere, has been soaring in popularity in recent years. The Yorkshire village was named one of the ‘best places to live in the UK’ due to its golden sandy beach, frolicking dolphins and amazing fossil discoveries. But people living there say it has come at a cost, with the sleepy atmosphere suiting holidaymakers and absent landlords but offering less for yo…