Unfortunately I have next to no knowledge of UTF and ASCII characters..
So if I read the other thread right, the real problem is that OIS will only give you code points, yet you want an extended ASCII character.
This is a big part of how Ogre::Font is used in QuickGUI:
const UVRect & getGlyphTexCoords (CodePoint id) const
As you can see, it only takes a code point. Does this mean the 'Â£' symbol is not included in .ttf files? With the information so far, it doesn't seem likely that I can do anything about it. If you had a custom or normal .ttf with the 'Â£' symbol, and it had an associated code point, you coude inject the symbols into the text without problem.
kfmasta, would you mind posting that in the other thread? Just to streamline where this stuff is happening -- Sinbad is watching the other thread.