Well, it has to be said that I got it wrong too! I thought Riverside
was on the corner of Talgarth Rd and Butterwick. I went to Hammersmith
today (saturday) to try and sort this out once and for all.
Ha-ha-bloody-ha! I followed up the lead in this thread about the
Smolensky's Restaurant, and found it. I did see Riverside when it was
open, but that was back in July 1970 and it flashed by while I was on
a 9 bus going to Mortlake. I also went and bought "LONDON TRANSPORT
BUS GARAGES" by John Aldridge. It describes HB as being in Great
Church Lane, but I had it as being near Linacre Court. A lot of the
book confirms my original thoughts, but confuses others - so, watch
this space!

Nick