This live-aboard is on the River Bure at Great Yarmouth
See also https://www.shipspotting.com/photos/3111342
Thanks to member 'heizer' for some history.

85t, 25.8m loa/24.0m lwl, 4.6m beam, 50bhp
built 1926 Union-Gießerei, Königsberg, East Prussia (No.233)
1927 Wehlau, K.Teichert, Königsberg/Allenburg
1930 Wehlau, Tilsiter Dampfer-Verein, Tilsit East Prussia
1936 Wehlau, Robert Meyhoefer, Königsberg
1947 Hildegard, Robert Meyhoefer, Hamburg (1947 Bremen)
1950 Oelexpress I, Neuwieder Reederei und Tankbetrieb Heinrich Aviszius, Neuwied/Germany
There is some information about this shipowner, which closed down in 1980s, in German at https://www.binnenschifferforum.de/showthread.php?10172-AVISZIUS .
[still lookiing for subsequent history]