Thanks node. I hadn't spotted that
From what I can make out the first maple is from one of these four groups:
type 1a: upright growing shrubs with 5-7 lobed green leaves
type 1d: upright growing shrubs with 5-7 lobed pink or orange/yellow spring leaves
type 5a: upright growing shrubs with linear green leaves (

)
type 6a: dwarf forms, green-leaved (

how do I know if its dwarfed)
Not just have to work out what cultivar it is from these.
Thanks again for your help