Thanks to the input from BaZe I tweaked the Specularity a bit. I understand what was causing the tap to look so flat, I had increased the 'roughness' channel too much. Resulting in a flat look. Here's a new render.
I am a video game artist at Dovetail games, working on Train Simulator 2014, 2015 and an unannounced title.
I also graduated from the CG Arts course at UCA in 2010 with a First Class.