1 looks like "dame's violet" hesperis matronalis, 18" high? Should
have a perfume if it is the above.

2 is probably definitely "herb robert" geranium robertianum, native to
UK.

4 is a dandelion thing. Do you really want to know its name? Lots
called heirachium all very similar.

5 could be "self heal" prunella vulgaris, and is that black medick in
the background, little yellow clovery flower?

(Is this a trap for know-it-alls?)