
I cant really put names to brands but... Silver spoon or anything from british sugar is beet. T&L, The Pantry, Cordelia, Merryfields are all cane.
Now I have to track you all down and kill you.

Dont forget, Gran, caster, TLX, Plain icing and preserving are all the same sugar just different sizes, Light brown and Dark brown are just gran with syrups added. Get whatever is cheapest. Just be wary though Fondant, Royal and some other types of icing have different additives and Jam sugar has added pectin.
God, I need to get out more!