Wiring up modern ceiling rose in old house
Based on the first and last images ie old rose and new rose, then:

1) the red wire goes to the brown on the new rose,

2) the two black ones to the blue wire on the new rose and 

3( the green or earth or ground wires go to the brass terminal on the new rose.

You don't have anything to use "loop", which would be for feeding the "next" light.