My understanding of this is...
If your a 'scaffolder' you can inspect with an inspection ticket, jobs erected within the criteria of what a 'scaffolder' can build. This might sound odd, but what Im trying to say is, to inspect hangers, temp roofs, shores etc, you must hold an advanced ticket.
Im pretty sure you dont have to have the advanced inspection tickets so long as your carded as a scaff to the equivilent level. This is how it stands at the moment but as usual Im pretty sure this will all change shortly.
Like already said, some of this is dependent on different contractors. Carillion for example, the scaffolds must be inspected by somone other than the scaffolder that erected it and they must be an advanced scaffolders of 5 years minimum at that level. Other contractors insist on other things. Wrong really, should all be one level playing field.
If that dont make sense, never mind, been a long day, off to bed...