Hi there :) I've taken on board your comments and come up with the following idea. I think this keeps in the 'trend' of your sister companies while giving it a fresh identity.
I think this style is working well, as you can see there are lots of ways to use it. Let me know if you have anything you would like to try. Cheers, Craig
#60 is nice but would be improved with the shading on the icon of #55 while keeping the undershadow of #60 (in other words losing the highlight from 60 on the icon itself and retaining the undershadow)