Default [Q] Any way to get WCDMA/LTE only mode?

Does anyone know if it is possible to get a "WCDMA/LTE Only" mode on the Nexus 5?

I basically want to stop the phone dropping to 2G. Recently LTE has been made available here and before that I used "WCDMA only" and it worked fine but that is no longer a viable option since I want to use LTE.

Thanks in advance