By Bethany Wales One of Scotland’s biggest house builders, Springfield Properties, has won a £6.3m contract to construct more affordable housing in the country. In an update this morning, the London-listed firm said it would be working with the Wheatley Group to complete the homes. The news comes after it signed £24m worth of new affordable housing contracts. Springfield Properties CEO Innes Smith said: “This new contract marks another great step for us in affordable housing, building on the excellent momentum with multiple recent contract wins and is a good way to end our current financial ye…