Help needed tracing steam yacht

Hello, my name is Eleanor Murray and I wonder if anyone here can help me trace the luxury Edwardian Steam yacht my late brother found in a dockyard around 1970, somewhere in East Angla I think, and towed up the Thames to London where he lived on it for at least six years and attempted to restore and make seaworthy again by himself. She was about 96 ft as far as I remember, and I'm not sure of her name but think it was something like Lally at that point.

I've often wondered what happened to her after he sold her and whether she still exists.