According to this notification, POL.L has a NAV of 6.86p per share. NAV is likely to be understated, too. Share price is 5.27p. Maybe it's possible to get a 30% return on investment (=6.86/5.27).
I first bought shares in POL.L at a price of 6.2672p, when the Footsie was at 5355. Mind, though, that I received a special dividend of 3p a share on that price, so the price I effectively paid was 3.2672p.
I also bought more shares on 18-Aug-2010 at 3.58p.See p 45 of my investment book.
Too bad I never bought more. I suspect a lot of value has been outted.