Could the second one be a bluebell or a spring onion? They look similar.
I would cut down the brambles and tidy as best you can, and as you come across plants, post pics on here to identify. You could have some plants or bulbs starting to appear that you would want to keep.
I just looked on Ebay and you can buy a bare root plant for £6.99. No seeds though.
In the programme The Instant Garden they used aluminium edging which gave a neat edge. But there are lots of different types of edging out there.
I have tete a tete daffodils, violets, muscari, scilla, crocus, snowdrops, polyanthus, dog toothed violets and hellebores that do well if you're looking for suggestions.
That's the plant in the picture I was thinking of Busy.
26. is definitely Echinops.
27. might be something called burnett.
28. I think its wild garlic.
29. Think that might be a perennial sweet pea.
30. Looks like gorse family.
32. wild Geum, tiny yellow flowers.
Yes, that was it Nut. I doubted myself as I know they come in all sizes.
1. I agree with Perki and Greenfingers. The leaves are right for Camellia.
19. Might be a hydrangea
20. Is not chives, its a grass I've seen by the water's edge when fishing.
21. Wait till it gets a bit bigger as it might be an Astilbe. So many things look the same at the moment.
22. If its not a big mass of violets, its something similar with blue flowers that I can't remember the name of.