Sirius Real Estate, the owner and operator of branded business and industrial parks providing conventional space and flexible workspace in Germany and the UK, has bought Chalcroft Business Park in Southampton in the UK for £38.6 million, and an adjoining 4.5 acre development site with outline planning permission, for a further £4.2 million. It has also completed the acquisition of a business park in Dresden, Germany, for €23.4 million.