A stretch orb weaver (Metellina)

A stretch orb weaver (Metellina)

Observation - A stretch orb weaver (Metellina) - UK and Ireland. Description: The lack of a separate head would make this a harvestman. My feeling, though, is that the head is hidden under the abdomen in this view and that it is a spider. On nettle leaf. Can anyone help with an ID, please? Edit: Changed to match Matt's ID. Many th

The lack of a separate head would make this a harvestman. My feeling, though, is that the head is hidden under the abdomen in this view and that it is a spider. On nettle leaf. Can anyone help with an ID, please?
Edit: Changed to match Matt's ID. Many thanks.