Some kind of sow thistle perhaps?

Some kind of sow thistle perhaps?

Observation - Some kind of sow thistle perhaps?. Description: Built up, industrial land near the sea. Plant about a foot high, flowers closed like closed groundsel flowers. Seeds in fluffy white balls about half an inch across.

Built up, industrial land near the sea.

Plant about a foot high, flowers closed like closed groundsel flowers. Seeds in fluffy white balls about half an inch across.