Gelis sp - wingless ichneumon wasp

I took this image in the flower bed last October. At the time I was trying to get pictures of a striking looking ichneumoninae and thought it was one of the red ants that I have in abundance in the garden so grabbed a record shot and carried on with what I was doing. Looking at it now, it doesn't seem to be an ant at all - head/eyes don't look right and there is no longer first segment on the antennae. No wings ... so I'm very puzzled.  Grateful if anyone can point me in the right direction.

This has now been confirmed by Gavin Broad on UK BWA Facebook Group as Gelis sp - one of the wingless ichneumonidae.  Aderyn shows no Welsh records for this family so is this a first Welsh record ?