I found this pretty cool band called ShushShush, which I think has some relation to Ambulance Ltd. Although I have only listened to How To Lie, I think I've got a pretty good impression of the group's musical style. It does indeed remind me a bit of something that Ambulance Ltd. may have made, so it would make sense that the two bands are closely connected, but again, that could very well be incorrect.
The band is playing for Music For Robots' CD release party at the Knitting Factory on the 26th.
You can also listen to a really rough demo called Pale Blue Bloodshot Gray, which I absolutely love. I am a complete sucker for lo-fi, honest music like this. It makes me cry.