Ascogaster grahami

When a parasitoid emerged from one of my Luffia ferchaultella cases collected from Hollins Hall Hotel, Baildon VC64, I was initially assuming it was going to be another Diadegma.
This one is a smaller insect and Mark Shaw tells me that it is the Braconid, Ascogaster grahami.
It is not a rare species and usually parasitises tineids rather than Psychidae.