I couldn't decide on whether to order the Novus 3 (A product available in the USA) or T-Cut Glass Polisher / Recovery product (Available UK/Europe). In the end I ordered T-Cut on eBay for £5.00, plus nipped down to my local DIY store and bought a Bosch 125mm polishing pad (£10) for my orbital sander.
A 500ml bottle of T-Cut glass polisher / restorer £5.00 from most spares depots or eBay (£4.00 P&P though! Ouch!)
1) I removed the CP upper & monitor surround and covered the unit with a large cover to stop dust and moisture getting into the unit
2) Cleaned the monitor with Fairy washing up liquid and warm water
3) Sprayed and polished the monitor with Window cleaner
4) Following the instructions of the T-Cut product I used a damp cloth to smear the product into the screen
5) Immediately I used the Orbital sander and polishing pad.
For the best results with scratches on the screen, I discovered that a liberal amount of T-Cut should be used and immediately polished. If the product was light or dried out then you got streaks and little actual polishing occurred.
The very first thing you'll notice is the purple protective sheen comes off, which for the vast majority of the scratches was an instant solution. Once you removed the entire protective sheen the underlying 'Green' tube surface was exposed.
I have included before and after images at roughly the same angle, plus I used the tube light in my garage to reflect the difference. If you look closely you'll see a 'haze' of very light scratches on the screen, which once polished have completely disappeared. The colour variation is hard to photograph and is not as pronounced as it seems on the images. You don't go from a nice black screen to alien green lol.
The result was amazing! I have only 1 slight scratch left and the monitor looks as good as new.
Before (Note the white line at the bottom centre of the image is NOT a scratch!)
How's this for smoooooooooth? (I ain't talking about their legs!)