My discharge rate was over 200+ Which equated to a 12 hour day. How I used the phone really had little bearing as the discharge issue was occuring effectively whilst the phone was idle. I do not know what the rate was when the phone was in standby but I am willing to bet it was high.
Anyway the firmware update from Singapore has been out a couple of days now so I visited the XDA forum and thanks to a tutorial and the collection of the right tools created by Heathcliff it was onwards and upwards.
Process is pretty straightforward and was easy especially as I was only performing a firmware flash. A couple of tools and 1 cab file and I was away.
[CAB] Official WP7 Updates List: 7.10.8107 + ALL LANGUAGES complete + OEM updates - xda-developers
Anyway all flashed now and running Firmware 12070. Uninstalled the old diag tool installed the new one. Both had the same result anyway, new one removes some details and the graph.
Previously 200+ consistently now hovers around the 100 mark. Tomorrow will be my first big test to see if I make it through a day and night without looking for a plug socket for my evening Fruit Ninja session.