Sacha wrote:
http://s1102.photobucket.com/albums/...rent=salad.jpg

This

spring I found a number of these volunteer plants in a bed where I had
sown some veg. They are about a foot tall. Have purple stems and a nice
crunchy texture to the leaves. The taste is mildly peppery, and
they are great in salads.

I can only think that they may have come from a pack of mixed salad
leaf seeds that I had the previous year.

I would like to be able to buy seed for the future, so does anyone
recognise these, please.

Al.

Purple kale?

First one looks like curly kale to me.
Second looks like a weed, and third looks like an anti-salad-theft device.