Edison Lighthouse was not really a group. They were British studio musicians who played on many recording sessions and with lead vocals fronted by another great recording studio session singer, Tony Burrows.
Nonetheless, they scored a huge hit worldwide in 1970 with Love Grows (Where My Rosemary Goes) and it's our Song Of The Week. Incidentally, the lead vocalist on the video is apparently NOT Tony Burrows. Amazing: a replacement lead singer miming to the original vocalist of a group that didn't even exist. Gotta love it.
Enjoy!
Michael