Yes, very little collated info regards the boats and trades around London's Waterways. I've spent a fair bit of time scratching around gathering various pieces of info, and know there's some on CWDF who also have done their own research. Here's a few photos, drifting off your original specific topic question's, but which might be of interest:
Here's BEN MACDHUI at Paddington during A40 extension works in 1967. By 1970, this boat was being used as a base for kid's summer activities by Beaucamp Lodge (moored about where the trendy coffee shops are now located at Paddington basin arm entrance).
Here's a photo of VICTOR in 1969, also on A40 extension works, at Harrow Road bridge.
Courtesy of the Mary Evans picture library (www.maryevans.com), here's a photo of VICTOR with TOPAZ around 25 years earlier at Brentford:
Is there another fleet of craft, which were given "colours" as names, or maybe there's a link with boat names beginning with "V"? Here's a photo of VIOLET at Ware:
Also courtesy of the Mary Evans picture library (www.maryevans.com), here's an interesting photo, taken on the Thames in London, of BILL & CORAL, which seem to be GU or R.Wey style Wideboats. Anyone got any information on these craft?:
Hope of interest.
Mark