Complex sentence: Roderick Ham, who had previously designed the Thorndike Theatre in Leatherhead, was commissioned to design the new theatre, and the Derby City Council offered the land (part of the new Eagle Centre shopping development).
Split into simpler sentences: Roderick Ham, who had previously designed the Thorndike Theatre in Leatherhead, was commissioned to design the new theatre. The Derby City Council offered the land (part of the new Eagle Centre shopping development).