Signalling right with road before end of road. You must signal before changing course or direction in plenty of time without confusing other road users - HC rule 103. In this scenario, the earliest point at which you can signal is when you are halfway across the road on the right.
Your browser does not support HTML 5 video, so you can not see video situations. To see the video situation, you must use a browser that supports HTML 5 span> video. Browsers that support HTML 5 span> videos can be downloaded from: