the figures that i have used are from Preiser (non paited) like the ones in the link below, most people know this name from model railways, they also do some 1:100 scale figures as well, some ready painted some not!
if you google with this search option you will find a few shops in the UK that sell these figures:
"Preiser detailed-figures 1:100"
mainly used in Architecture offices?
order numbers from Preiser:
74090, 190 pices unpainted, allsorts
74009, 6 pices painted (orange) mechanics
some shops do the unpainted ones in groups of six, like this german shop for example!
this is were i got my figures from:
3 figures came from part no. 124501
2 figures come from part no. 124510
3 figures come from part no. 124529
the rest landed in the bin..!!!
http://www.modulor.de/shop/oxid.php/sid/x/shp/oxbaseshop/cl/details/anid/TLGM/pgNr/2