1 Common Toadflax
2 Common Centaury
3 Tall (Golden) Melilot for me as keel + wings of flower appear to be equal
4 Wild Basil
5 Field Scabious
6 Devil'sbit Scabious
As a general rule I would try to include more of foliage + structure of plant to assist ID, just a flower isn't always enough!
