Complex sentence: Its most recent peak was in 2007 where shares were worth over £8 each it has since plummeted in value and is currently worth 0.79p per share as of 10th October 2011.
Split into simpler sentences: Its most recent peak was in 2007, when shares were worth over £8 each. It has since plummeted in value and is currently worth 0.79p per share as of 10th October 2011.