If it's the same as the Nexus 5, disabling Google Now and, off the top of my head, in Settings > Apps > All clear the cache for Google Play Services and Google Services Framework (I think they are the two needed) then restart the phone. Google Play Services doesn't appear in my N5 battery stats at all after this.
Thanks for that I will give it a try, well clear the cache for those two as I use Google Now
