How do you remove ubuntu desktop?

Hi All,

I’d like to uninstall the ubuntu desktop and try out lxde.

Having already installed the ubuntu-desktop, I then
sudo apt-get -y install lxde lxde-core lxde-icon-theme

and then tried to
sudo apt-get remove ubuntu-desktop

When I start, it still boots ubuntu-desktop.
Not really what I was after!!

How do I get rid of it?

Thanks for your help – it is much appreciated.

Loving the BBB so far.

Kind regads