Wrong though. If you are on a roundabout with exits at 9, 12, 3, (as per clock face) the only time you should be indicating right is if you are taking the exit at 3 o'clock (or going right round and coming off where you joined). If indicating right you should also be on the inside track around...
If they are going down Hazelgrove Rd from Sussex Rd there is no need to indicate right at the roundabout however, you should indicate right to switch from the left lane (which is for South Rd only) to the right lane.
Google maps doesn't really help that much.
https://www.google.co.uk/maps/@50.9948308,-0.1004594,3a,75y,337.45h,86.47t/data=!3m6!1e1!3m4!1sRGLlQqJeyLiFVUeALqgG5Q!2e0!7i13312!8i6656
If you look at the streetview, you will see the B2112 is shown as being at 12 o'clock and therefore no signal is...