Changed chainset, bottom bracket, wheels and cogset and find these parts left over, and the rear wheel clicking? I just changed the crankset, bracket, wheels and cogset (my first bike repair obviously) on my specialised tricross, and after my victory tea realised I had these three bits left over, and not sure where they're supposed to go? Also the back wheel clicks when coasting forwards? Many thanks for your help in advance

Please see better quality pics below. The parts are Shimano claris (at least the crankset is, not sure about the bracket) and the wheels are Aksiums. Thanks
There are several (five) questions in your post, and it is hard to answer all of them at once. Comments seem to answer some of them, and I would refer to manufacturer's manuals of respective parts you've installed for identification purposes.

The third thing (silver ring) is Mavic's spacer for 10-speed Shimano cassettes placed on their freehubs. If you use 11-speed cassette, then you don't need it.