Complex sentence: In 2009, a proposal was submitted for the Campbell's Meadow factory site to be redeveloped to include a employment and business park, this plan had been rejected in favour of Sainsburys, but in June 2011 Tesco was given permission to a superstore.
Split into simpler sentences: In 2009, a proposal was submitted for the Campbell's Meadow factory site to be redeveloped to include an employment and business park. This plan had been rejected in favour of Sainsburys, but in June 2011 Tesco was given permission to open a superstore.