By Bethany Wales Residential property giant Grainger has snapped up a £31m build-to-rent landmark located in one of Manchester’s most thriving neighbourhoods. The UK’s largest listed landlord said the purchase of The Astley – a fully-occupied development of more than 135 homes within the city’s Northern Quarter – reflected an increasing number of opportunities to acquire build-to-rent schemes. The group bought the development from property investor M&G Real Estate. This latest buy by Grainger will add to the company’s existing cluster of around 1,700 rental homes in the North West, including C…