I think in the future something like
this might be a good way to go, but while I find my feet I want to start off with a sensible single flash option that I can expand upon as required so far both the Nissin and Yongnuo look like good options, and from what I've seen when asking in Independent photography stores the Nissin is the one that gets the higher recommendations. CameraWorld in Wells Street also suggested Nissin over own brand, but I didn't see any Yongnuo in these stores, and I really want to stick one on a camera and shoot a couple of shots to see how they are before I make a final decision, where I can't try them the next best thing would be to find out why they appeal to other photographers.