Thanks for the reply.
Just to be clear I wouldn't like the functionality taken away, When I'm on my laptop its really nice. I would just like an option to revert to normal mouse usage if someone is using a normal external mouse. Or possibly a similar usage as Sketchup, They have a function of pressing CMD and Ctrl and clicking you can orbit, or you press "O" for the orbit tool.
I have seen since my original post, that if you use a mouse that doesn't have sideways scrolling then the zoom works on the scroll wheel. Looks like I just have to maybe find a different mouse My MX Anywhere isn't unfortunately going to work.
Thanks a lot