No interactions present.
Definitely an ichneumonid, and a fairly attractively marked species, so it's a bit frustrating that I don't immediately recognise it! It could be a rather attractive Lissonota species (subfamily Banchinae) but it may not be!
Just realised I'd already commented on this! Am obviously not fully awake.
Lat/Lng: 51.9179, -1.1433
OS grid ref: SP590247