Complex sentence: On 11 November 2010, Wandsworth Council granted planning permission for the development of the Battersea Power Station site, and this permission was then approved by the Mayor of London on 22 December 2010.
Split into simpler sentences: On 11 November 2010, Wandsworth Council granted planning permission for the development of the Battersea Power Station site. The Battersea Power Station site planning permission was approved by the Mayor of London on 22 December 2010.