Petty Spurge (Euphorbia peplus)

Petty Spurge (Euphorbia peplus)

Observation - Petty Spurge (Euphorbia peplus). Description: Growing readily on open soil as a garden weed. I've spent a while looking at Rose but am no further forward as to a species ID. Can anyone help, please? Edit: 2nd photo added. Petty Spurge (E. peplus)? Edit: Changed to match Ambroise' ID. Many thanks.

Growing readily on open soil as a garden "weed". I've spent a while looking at Rose but am no further forward as to a species ID. Can anyone help, please?
Edit: 2nd photo added. Petty Spurge (E. peplus)?
Edit: Changed to match Ambroise' ID. Many thanks.