Wasp, smallish, around 6.5mm. Looks a bit like Diplazon laetatorius but legs different colour and abdomen different shape.
No interactions present.
Most ichnumonid species - there is a huge number - tend to look the same. Only a specialist in the group can reliably identify them (Collin's Guide won't help!)
BMIG website: www.bmig.org.uk (centipedes, millipedes & woodlice)
BMIG Newsletters ~ www.bmig.org.uk/view/resource/bmig-newsletter
BMIG Bulletins ~ www.bmig.org.uk/view/resource/bmig-bulletin
Lat/Lng: 51.8011, -1.4091
OS grid ref: SP408115