I went to the Cromwell Bottom open day on Saturday.
I saw a number of plants I had not seen before locally.
 So many Orchids I could not start to try and identify them.
The delicate and vividly pink/red Grass Vetchling (Lathyrus nissolia)
which Ali directed me too.
Hop Trefoil (Trifolium campestre)
This has a much larger flower head than Lesser Trefoil (Trifolium dubium)
It can also be distinguished by the terminal leaflet having a long stalk.
Creeping Cinqufoil (Potentilla reptans)

Eyebright – probably (Euphrasia nemorosa)

I parked a distance from Cromwell Bottom
in order to give the dogs a walk before I arrived.
On my way back down the canal I came across this colourful Bindweed.
 Pink Bindweed (Calystegia sepium subsp. roseata)
A variant of Hedge Bindweed as can be seen by the non overlapping bracteoles
Also visible in the above image are hairs on the petiole which distinguish this from
Calystegia sepium forma colorata
 Finally, the shape of the space between the leaf lobes
as well as the bracteoles helps to distinguish this from Calystegia pulchra
a bindweed with similar flowers more akin to Large Bindweed (Calystegia silvatica)