Apex Housing Group, an innovative airspace property developer, has received a £6.25m investment from BGF to accelerate its growth ambitions in London’s growing rooftop development market, estimated to be worth up to £54bn. Apex purchases unused ‘airspace’ above residential, commercial and public building rooftops, and converts the space into new, modern homes – generating potential high returns for property owners and helping to alleviate the housing squeeze in London.