Have you got Tim Tyne's book? It's really all in there!
Breeding ewes: check udders (soft and by now quite small), do pedicure, check body condition (although by now they should be quite well covered if tup goes in in a couple of weeks), check teeth if they are older.
Store lambs: just a quick check of their feet, condition, weigh if you can - if you plan to sell them soon-ish.