I have bought the monthly sub for Lightroom and Photoshop cc
but I downloaded the version 5.7.1 before i realised I had to do this through Creative cloud.
I now have Lightroom CC and Lightroom 5.7.1
in Finder i see Uninstall Lightroom but this is the alias so I think this is Lightroom cc
I also see Lightroom 5.7.1 higher up the finder tree but I can't see an uninstaller for this.
How do I uninstall it - it's taking up 1.6g please
There usually isn't an uninstaller for Mac. You just Delete the program from the Applications folder.
In your case I would uninstall everything then run the Adobe CC cleaner app to remove all traces of Adobe software then reinstall the CC desktop app and then LR CC 2015.4 and PS CC.
Thanks for your suggestions which I've followed and everything seems to be working fine.