Former Dutch barge, now houseboat (or in this case, gardenboat) NIEUWE ZORG berthed on the River Brent/Grand Union Canal at Brentford, West London
She has old-style Dutch registration at Amsterdam and "795 BLIED 1929" (assuming that it is genuine). Can that be decoded?

Found something more now.
built 7/1929 H Harling, Boskoop (near Alphen a/d Rijn)
27.0 x 4.15 x (dr) 1.27m, 120bhp
At Courchelettes, France (when?): https://www.kustvaartforum.com/viewtopic.php?t=7665&start=1590
Some data: https://www.kustvaartforum.com/viewtopic.php?t=7665&start=1600