No interactions present.
Seem to have been a few around, this summer...alas, none here! Nice sighting...lucky you.
Worth adding a note about the life cycle perhaps, as most people won't know the species, I suspect, and it is an unusual one!
My Flickr photos...
Do you mean that they lay eggs in the egg pods of Migratory and Desert Locusts, where the larvae feed and pupate? Apparently they turn up wherever the locusts swarm. It is possible that they also can live on the eggs of British grasshoppers. However apart from my sighting last year of a Desert Locust nymph in the park next door - http://www.ispot.org.uk/node/296914 - I've seen a couple of reports of locusts in Felixstowe - about 15 miles down the road - in August this year. See http://www.birdforum.net/showthread.php?t=265196.
I'd call that unusual!
One of those locusts looks like an Egyptian Grasshopper with striped eyes...perhaps came in on a container?
Lat/Lng: 52.061168, 1.159024
OS grid ref: TM166450
In my garden.