Complex sentence: In 2011 the new owner, a development company, applied for permission to demolish the cinema complex of the Britannia Centre, which was used by ALDI until October of 2011.
Split into simpler sentences: In 2011 the new owner, a development company, applied for permission to demolish the cinema complex of the Britannia Centre. The cinema complex in question was used by ALDI until October of 2011.