@siege the line out direction can suck. But the integrated fuse overrules it all. Was there (ages ago) usually no central fuse box in Uk for flats or houses?
@andre @siege There were always fuses in the distribution board since the time electricity was in widespread use.
The fuse in the power distribution board is to primarily protect the circuit (prevent overload causing fire), the fuse in the appliance plug is to provide some level of protection for the person and the appliance against certain types of fault that would not cause enough current draw to blow the much higher rated fuse in the distribution board. Appliance plug fuses are rated based on the application (3A, 5A, 13A).