Thanks for your help, I now have my touchpad back..
Yes the mouse works in the UEFI screen, so I agree it isn't hardware. I did a reset - where it deletes all my apps and programs and the start up screen says "resetting this PC ##%" and then "Installing Windows ....". I have also checked of course that the touchpad was actually turned on etc.
I don't sign in using my microsoft account, only a local account, however to stop any sync I removed all wireless stations from the surface pro, and have done another reset. And Yay I now have my touchpad working again. Again thank you for your help. Now of course I have to turn the network connection back on. I have disabled windows updates (hopefully). and will go through any available updates manually to test if this is where the problem lies. Is there anything else I can do to try and work out what setting etc is causing the problem?