Hi what area are you from? incase it is me you have seen
The aero kit is what mine has which isnt part of the works kit but most works MINI's do have them on. The aero kit (side skirts, front/rear bumber) come as standard just like mine with black arches from MINI. You can get them colour coded like lots of people have done which looks very nice.
The wheels i have which you rightly said are from the movie 'italian job' and are not works alloys but again some works MINI's had them on advetisements. They are called r90's, you can get them in black with polished lip, silver with polished lip and anthracite with polished lip like you stated.
Works bits that you can get for Coopers and ones (some not from dealerships) is the works soundkit which is exhaust, remap, airfilter and front and rear badges. You can also get works alloys, works mats, seats and so on.