Now I can't boot past the ubuntu splash screen.
Re-installed again. Same result on first boot up, machine locked while attempting to connect. Hard restart, to terminal and sudo dpkg --purge bcmwl-kernel-source, result was no such package (bcmwl-kernel-source) installed, reboot and attempt connect again. No wireless networks show up under network icon at top right, so manually add the network, upon attempting to close the Network Connections dialog box it locks up again.
Note: I've installed 3 different times using Option 1, and one time using Option 3 of the installation menu.
Thanks RJ